31000112100321 has 32 divisors (see below), whose sum is σ = 51734215787520. Its totient is φ = 16074559888704.

The previous prime is 31000112100233. The next prime is 31000112100341. The reversal of 31000112100321 is 12300121100013.

It is a happy number.

It is not a de Polignac number, because 31000112100321 - 2²³ = 31000103711713 is a prime.

It is a super-2 number, since 2×31000112100321² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31000112100321.

It is not an unprimeable number, because it can be changed into a prime (31000112100341) 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, 962301895 + ... + 962334108.

It is an arithmetic number, because the mean of its divisors is an integer number (1616694243360).

Almost surely, 2^{31000112100321} is an apocalyptic number.

It is an amenable number.

31000112100321 is a deficient number, since it is larger than the sum of its proper divisors (20734103687199).

31000112100321 is a wasteful number, since it uses less digits than its factorization.

31000112100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924636085.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31000112100321 its reverse (12300121100013), we get a palindrome (43300233200334).

The spelling of 31000112100321 in words is "thirty-one trillion, one hundred twelve million, one hundred thousand, three hundred twenty-one".