31031011120 has 40 divisors (see below), whose sum is σ = 72154618416. Its totient is φ = 12411111168.

The previous prime is 31031011117. The next prime is 31031011127. The reversal of 31031011120 is 2111013013.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×31031011120² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31031011120.

It is not an unprimeable number, because it can be changed into a prime (31031011127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242274 + ... + 1267006.

Almost surely, 2^31031011120 is an apocalyptic number.

It is an amenable number.

31031011120 is an abundant number, since it is smaller than the sum of its proper divisors (41123607296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31031011120 is a wasteful number, since it uses less digits than its factorization.

31031011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40429 (or 40423 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31031011120 its reverse (2111013013), we get a palindrome (33142024133).

The spelling of 31031011120 in words is "thirty-one billion, thirty-one million, eleven thousand, one hundred twenty".