31103131131233 has 64 divisors (see below), whose sum is σ = 37232866944000. Its totient is φ = 25429419417600.

The previous prime is 31103131131211. The next prime is 31103131131253. The reversal of 31103131131233 is 33213113130113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31103131131233 is a prime.

It is a super-5 number, since 5×31103131131233⁵ (a number of 69 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (31103131131203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1543646243 + ... + 1543666391.

It is an arithmetic number, because the mean of its divisors is an integer number (581763546000).

Almost surely, 2^{31103131131233} is an apocalyptic number.

It is an amenable number.

31103131131233 is a deficient number, since it is larger than the sum of its proper divisors (6129735812767).

31103131131233 is a wasteful number, since it uses less digits than its factorization.

31103131131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20850.

The product of its (nonzero) digits is 1458, while the sum is 26.

Adding to 31103131131233 its reverse (33213113130113), we get a palindrome (64316244261346).

The spelling of 31103131131233 in words is "thirty-one trillion, one hundred three billion, one hundred thirty-one million, one hundred thirty-one thousand, two hundred thirty-three".