31113200321 has 16 divisors (see below), whose sum is σ = 37557206400. Its totient is φ = 25178594688.

The previous prime is 31113200317. The next prime is 31113200351. The reversal of 31113200321 is 12300231113.

It is a cyclic number.

It is not a de Polignac number, because 31113200321 - 2² = 31113200317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31113200321.

It is not an unprimeable number, because it can be changed into a prime (31113200351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360236 + ... + 438173.

It is an arithmetic number, because the mean of its divisors is an integer number (2347325400).

Almost surely, 2^31113200321 is an apocalyptic number.

It is an amenable number.

31113200321 is a deficient number, since it is larger than the sum of its proper divisors (6444006079).

31113200321 is a wasteful number, since it uses less digits than its factorization.

31113200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798728.

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

Adding to 31113200321 its reverse (12300231113), we get a palindrome (43413431434).

The spelling of 31113200321 in words is "thirty-one billion, one hundred thirteen million, two hundred thousand, three hundred twenty-one".