31311104331 has 32 divisors (see below), whose sum is σ = 47248579840. Its totient is φ = 18311577984.

The previous prime is 31311104317. The next prime is 31311104389. The reversal of 31311104331 is 13340111313.

It is not a de Polignac number, because 31311104331 - 2¹⁴ = 31311087947 is a prime.

It is a super-2 number, since 2×31311104331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31311104298 and 31311104307.

It is not an unprimeable number, because it can be changed into a prime (31311104431) 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, 190261 + ... + 314358.

It is an arithmetic number, because the mean of its divisors is an integer number (1476518120).

Almost surely, 2^31311104331 is an apocalyptic number.

31311104331 is a deficient number, since it is larger than the sum of its proper divisors (15937475509).

31311104331 is a wasteful number, since it uses less digits than its factorization.

31311104331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504715.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31311104331 its reverse (13340111313), we get a palindrome (44651215644).

The spelling of 31311104331 in words is "thirty-one billion, three hundred eleven million, one hundred four thousand, three hundred thirty-one".