31233425 has 12 divisors (see below), whose sum is σ = 40414080. Its totient is φ = 23899920.

The previous prime is 31233421. The next prime is 31233443. The reversal of 31233425 is 52433213.

It is not a de Polignac number, because 31233425 - 2² = 31233421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 31233425.

It is not an unprimeable number, because it can be changed into a prime (31233421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26585 + ... + 27734.

It is an arithmetic number, because the mean of its divisors is an integer number (3367840).

Almost surely, 2^31233425 is an apocalyptic number.

It is an amenable number.

31233425 is a deficient number, since it is larger than the sum of its proper divisors (9180655).

31233425 is a wasteful number, since it uses less digits than its factorization.

31233425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54352 (or 54347 counting only the distinct ones).

The product of its digits is 2160, while the sum is 23.

The square root of 31233425 is about 5588.6872340470. The cubic root of 31233425 is about 314.9245641147.

Adding to 31233425 its reverse (52433213), we get a palindrome (83666638).

The spelling of 31233425 in words is "thirty-one million, two hundred thirty-three thousand, four hundred twenty-five".