31130132 has 48 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 12814560.

The previous prime is 31130101. The next prime is 31130147. The reversal of 31130132 is 23103113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18419 + ... + 20037.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^31130132 is an apocalyptic number.

It is an amenable number.

31130132 is an abundant number, since it is smaller than the sum of its proper divisors (34188268).

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

31130132 is a wasteful number, since it uses less digits than its factorization.

31130132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 31130132 is about 5579.4383229856. The cubic root of 31130132 is about 314.5770152009.

Adding to 31130132 its reverse (23103113), we get a palindrome (54233245).

The spelling of 31130132 in words is "thirty-one million, one hundred thirty thousand, one hundred thirty-two".