31253272 has 8 divisors (see below), whose sum is σ = 58599900. Its totient is φ = 15626632.

The previous prime is 31253267. The next prime is 31253279. The reversal of 31253272 is 27235213.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31253279) 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 as a sum of consecutive naturals, namely, 1953322 + ... + 1953337.

Almost surely, 2^31253272 is an apocalyptic number.

It is an amenable number.

31253272 is a deficient number, since it is larger than the sum of its proper divisors (27346628).

31253272 is a wasteful number, since it uses less digits than its factorization.

31253272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906665 (or 3906661 counting only the distinct ones).

The product of its digits is 2520, while the sum is 25.

The square root of 31253272 is about 5590.4625926662. The cubic root of 31253272 is about 314.9912553212.

Adding to 31253272 its reverse (27235213), we get a palindrome (58488485).

The spelling of 31253272 in words is "thirty-one million, two hundred fifty-three thousand, two hundred seventy-two".