31242332 has 12 divisors (see below), whose sum is σ = 59644536. Its totient is φ = 14201040.

The previous prime is 31242331. The next prime is 31242347. The reversal of 31242332 is 23324213.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31242331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354983 + ... + 355070.

It is an arithmetic number, because the mean of its divisors is an integer number (4970378).

Almost surely, 2^31242332 is an apocalyptic number.

It is an amenable number.

31242332 is a deficient number, since it is larger than the sum of its proper divisors (28402204).

31242332 is a wasteful number, since it uses less digits than its factorization.

31242332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710068 (or 710066 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 31242332 is about 5589.4840549017. The cubic root of 31242332 is about 314.9544975006.

Adding to 31242332 its reverse (23324213), we get a palindrome (54566545).

The spelling of 31242332 in words is "thirty-one million, two hundred forty-two thousand, three hundred thirty-two".