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101010031031 = 7135081218461
BaseRepresentation
bin101111000010010101…
…0101100000110110111
3100122201120012020100102
41132010222230012313
53123332031443111
6114223043304315
710204060045250
oct1360452540667
9318646166312
10101010031031
1139924590398
12176b007b09b
1396a9b4c640
144c6325db27
152962c4d13b
hex1784aac1b7

101010031031 has 16 divisors (see below), whose sum is σ = 124345075008. Its totient is φ = 79903929600.

The previous prime is 101010030997. The next prime is 101010031049. The reversal of 101010031031 is 130130010101.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-101010031031 is a prime.

It is a super-2 number, since 2×1010100310312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101010031091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353141 + ... + 571601.

It is an arithmetic number, because the mean of its divisors is an integer number (7771567188).

Almost surely, 2101010031031 is an apocalyptic number.

101010031031 is a deficient number, since it is larger than the sum of its proper divisors (23335043977).

101010031031 is a wasteful number, since it uses less digits than its factorization.

101010031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223562.

The product of its (nonzero) digits is 9, while the sum is 11.

Adding to 101010031031 its reverse (130130010101), we get a palindrome (231140041132).

The spelling of 101010031031 in words is "one hundred one billion, ten million, thirty-one thousand, thirty-one".

Divisors: 1 7 13 91 5081 35567 66053 218461 462371 1529227 2839993 19879951 1110000341 7770002387 14430004433 101010031031