31011332112 has 100 divisors (see below), whose sum is σ = 92651260416. Its totient is φ = 10003642560.

The previous prime is 31011332111. The next prime is 31011332113. The reversal of 31011332112 is 21123311013.

31011332112 is a `hidden beast` number, since 310 + 11 + 332 + 1 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (31011332111) and next prime (31011332113).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31011332111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 345768 + ... + 426119.

Almost surely, 2^31011332112 is an apocalyptic number.

It is an amenable number.

31011332112 is an abundant number, since it is smaller than the sum of its proper divisors (61639928304).

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

31011332112 is a wasteful number, since it uses less digits than its factorization.

31011332112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771938 (or 771923 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31011332112 its reverse (21123311013), we get a palindrome (52134643125).

It can be divided in two parts, 310113 and 32112, that added together give a square (342225 = 585²).

The spelling of 31011332112 in words is "thirty-one billion, eleven million, three hundred thirty-two thousand, one hundred twelve".