31342332 has 48 divisors (see below), whose sum is σ = 84842240. Its totient is φ = 8819712.

The previous prime is 31342319. The next prime is 31342351. The reversal of 31342332 is 23324313.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a junction number, because it is equal to n+sod(n) for n = 31342299 and 31342308.

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, 2844 + ... + 8412.

Almost surely, 2^31342332 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 31342332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42421120).

31342332 is an abundant number, since it is smaller than the sum of its proper divisors (53499908).

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

31342332 is a wasteful number, since it uses less digits than its factorization.

31342332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650 (or 5648 counting only the distinct ones).

The product of its digits is 1296, while the sum is 21.

The square root of 31342332 is about 5598.4222777493. The cubic root of 31342332 is about 315.2901735313.

Adding to 31342332 its reverse (23324313), we get a palindrome (54666645).

The spelling of 31342332 in words is "thirty-one million, three hundred forty-two thousand, three hundred thirty-two".