31923234 has 40 divisors (see below), whose sum is σ = 81753408. Its totient is φ = 9120600.

The previous prime is 31923197. The next prime is 31923239. The reversal of 31923234 is 43232913.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31923198 and 31923207.

It is not an unprimeable number, because it can be changed into a prime (31923239) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12942 + ... + 15209.

Almost surely, 2^31923234 is an apocalyptic number.

31923234 is an abundant number, since it is smaller than the sum of its proper divisors (49830174).

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

31923234 is a wasteful number, since it uses less digits than its factorization.

31923234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28172 (or 28163 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 31923234 is about 5650.0649553788. The cubic root of 31923234 is about 317.2261353878.

The spelling of 31923234 in words is "thirty-one million, nine hundred twenty-three thousand, two hundred thirty-four".