31234172 has 12 divisors (see below), whose sum is σ = 55691496. Its totient is φ = 15322320.

The previous prime is 31234141. The next prime is 31234183. The reversal of 31234172 is 27143213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73454 + ... + 73877.

It is an arithmetic number, because the mean of its divisors is an integer number (4640958).

Almost surely, 2^31234172 is an apocalyptic number.

It is an amenable number.

31234172 is a deficient number, since it is larger than the sum of its proper divisors (24457324).

31234172 is a wasteful number, since it uses less digits than its factorization.

31234172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147388 (or 147386 counting only the distinct ones).

The product of its digits is 1008, while the sum is 23.

The square root of 31234172 is about 5588.7540650846. The cubic root of 31234172 is about 314.9270747452.

Adding to 31234172 its reverse (27143213), we get a palindrome (58377385).

The spelling of 31234172 in words is "thirty-one million, two hundred thirty-four thousand, one hundred seventy-two".