31025472 has 28 divisors (see below), whose sum is σ = 82088736. Its totient is φ = 10341760.

The previous prime is 31025471. The next prime is 31025497. The reversal of 31025472 is 27452013.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31025471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80604 + ... + 80987.

Almost surely, 2^31025472 is an apocalyptic number.

31025472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31025472 is an abundant number, since it is smaller than the sum of its proper divisors (51063264).

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

31025472 is a wasteful number, since it uses less digits than its factorization.

31025472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161606 (or 161596 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 31025472 is about 5570.0513462624. The cubic root of 31025472 is about 314.2240817358.

Adding to 31025472 its reverse (27452013), we get a palindrome (58477485).

The spelling of 31025472 in words is "thirty-one million, twenty-five thousand, four hundred seventy-two".