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231142124013213 = 37171932013351209
BaseRepresentation
bin110100100011100011111000…
…001100011100011010011101
31010022101222020001011011122210
4310203203320030130122131
5220244013032221410323
62135333120442031033
766454316210651520
oct6443437014343235
91108358201134583
10231142124013213
1167715908162a56
1221b10a857a8479
139bc87bb6037aa
1441114a4b82bb7
151bac80ca0d293
hexd238f831c69d

231142124013213 has 32 divisors (see below), whose sum is σ = 372937233265920. Its totient is φ = 124311050035200.

The previous prime is 231142124013173. The next prime is 231142124013217. The reversal of 231142124013213 is 312310421241132.

231142124013213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231142124013213 - 213 = 231142124005021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231142124013217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67297153 + ... + 70648361.

It is an arithmetic number, because the mean of its divisors is an integer number (11654288539560).

Almost surely, 2231142124013213 is an apocalyptic number.

It is an amenable number.

231142124013213 is a deficient number, since it is larger than the sum of its proper divisors (141795109252707).

231142124013213 is a wasteful number, since it uses less digits than its factorization.

231142124013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544437.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 231142124013213 its reverse (312310421241132), we get a palindrome (543452545254345).

The spelling of 231142124013213 in words is "two hundred thirty-one trillion, one hundred forty-two billion, one hundred twenty-four million, thirteen thousand, two hundred thirteen".

Divisors: 1 3 7 17 21 51 119 357 193201 579603 1352407 3284417 3351209 4057221 9853251 10053627 22990919 23458463 56970553 68972757 70375389 170911659 398793871 1196381613 647456930009 1942370790027 4532198510063 11006767810153 13596595530189 33020303430459 77047374671071 231142124013213