31452472 has 16 divisors (see below), whose sum is σ = 61007400. Its totient is φ = 15183840.

The previous prime is 31452461. The next prime is 31452481. The reversal of 31452472 is 27425413.

It is a self number, because there is not a number n which added to its sum of digits gives 31452472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67554 + ... + 68017.

Almost surely, 2^31452472 is an apocalyptic number.

It is an amenable number.

31452472 is a deficient number, since it is larger than the sum of its proper divisors (29554928).

31452472 is a wasteful number, since it uses less digits than its factorization.

31452472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135606 (or 135602 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 31452472 is about 5608.2503510453. The cubic root of 31452472 is about 315.6590618665.

Adding to 31452472 its reverse (27425413), we get a palindrome (58877885).

The spelling of 31452472 in words is "thirty-one million, four hundred fifty-two thousand, four hundred seventy-two".