31133200112 has 40 divisors (see below), whose sum is σ = 69021972192. Its totient is φ = 13326508800.

The previous prime is 31133200097. The next prime is 31133200127. The reversal of 31133200112 is 21100233113.

It is an interprime number because it is at equal distance from previous prime (31133200097) and next prime (31133200127).

It is a super-2 number, since 2×31133200112² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77339 + ... + 261242.

Almost surely, 2^31133200112 is an apocalyptic number.

It is an amenable number.

31133200112 is an abundant number, since it is smaller than the sum of its proper divisors (37888772080).

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

31133200112 is a wasteful number, since it uses less digits than its factorization.

31133200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339417 (or 339411 counting only the distinct ones).

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

Adding to 31133200112 its reverse (21100233113), we get a palindrome (52233433225).

The spelling of 31133200112 in words is "thirty-one billion, one hundred thirty-three million, two hundred thousand, one hundred twelve".