31324132 has 72 divisors (see below), whose sum is σ = 68768000. Its totient is φ = 12475008.

The previous prime is 31324127. The next prime is 31324133. The reversal of 31324132 is 23142313.

It is not an unprimeable number, because it can be changed into a prime (31324133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396469 + ... + 396547.

Almost surely, 2^31324132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31324132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34384000).

31324132 is an abundant number, since it is smaller than the sum of its proper divisors (37443868).

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

31324132 is a wasteful number, since it uses less digits than its factorization.

31324132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 105 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 31324132 is about 5596.7965837611. The cubic root of 31324132 is about 315.2291336973.

Adding to 31324132 its reverse (23142313), we get a palindrome (54466445).

The spelling of 31324132 in words is "thirty-one million, three hundred twenty-four thousand, one hundred thirty-two".