31396932 has 72 divisors (see below), whose sum is σ = 94663296. Its totient is φ = 8578944.

The previous prime is 31396921. The next prime is 31396933. The reversal of 31396932 is 23969313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is not an unprimeable number, because it can be changed into a prime (31396933) 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, 3088 + ... + 8504.

It is an arithmetic number, because the mean of its divisors is an integer number (1314768).

Almost surely, 2^31396932 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 31396932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47331648).

31396932 is an abundant number, since it is smaller than the sum of its proper divisors (63266364).

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

31396932 is a wasteful number, since it uses less digits than its factorization.

31396932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457 (or 5452 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 31396932 is about 5603.2965297225. The cubic root of 31396932 is about 315.4731513726.

The spelling of 31396932 in words is "thirty-one million, three hundred ninety-six thousand, nine hundred thirty-two".