31113132 has 12 divisors (see below), whose sum is σ = 72597336. Its totient is φ = 10371040.

The previous prime is 31113113. The next prime is 31113167. The reversal of 31113132 is 23131113.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296369 + ... + 1296392.

It is an arithmetic number, because the mean of its divisors is an integer number (6049778).

Almost surely, 2^31113132 is an apocalyptic number.

It is an amenable number.

31113132 is an abundant number, since it is smaller than the sum of its proper divisors (41484204).

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

31113132 is a wasteful number, since it uses less digits than its factorization.

31113132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592768 (or 2592766 counting only the distinct ones).

The product of its digits is 54, while the sum is 15.

The square root of 31113132 is about 5577.9146641016. The cubic root of 31113132 is about 314.5197418275.

Adding to 31113132 its reverse (23131113), we get a palindrome (54244245).

The spelling of 31113132 in words is "thirty-one million, one hundred thirteen thousand, one hundred thirty-two".