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31302131201 = 1124317117023
BaseRepresentation
bin11101001001110000…
…001001111000000001
32222210111111000120122
4131021300021320001
51003101321144301
622214025150025
72155460503505
oct351160117001
988714430518
1031302131201
1112303267520
12609702b315
132c4b098133
14172d362305
15c330da81b
hex749c09e01

31302131201 has 8 divisors (see below), whose sum is σ = 34149475584. Its totient is φ = 28455069520.

The previous prime is 31302131173. The next prime is 31302131219. The reversal of 31302131201 is 10213120313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31302131201 - 234 = 14122262017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31302131201.

It is not an unprimeable number, because it can be changed into a prime (31302131251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208976 + ... + 325998.

It is an arithmetic number, because the mean of its divisors is an integer number (4268684448).

Almost surely, 231302131201 is an apocalyptic number.

It is an amenable number.

31302131201 is a deficient number, since it is larger than the sum of its proper divisors (2847344383).

31302131201 is a wasteful number, since it uses less digits than its factorization.

31302131201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141351.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31302131201 its reverse (10213120313), we get a palindrome (41515251514).

The spelling of 31302131201 in words is "thirty-one billion, three hundred two million, one hundred thirty-one thousand, two hundred one".

Divisors: 1 11 24317 117023 267487 1287253 2845648291 31302131201