31275148 has 12 divisors (see below), whose sum is σ = 54792360. Its totient is φ = 15620192.

The previous prime is 31275143. The next prime is 31275149. The reversal of 31275148 is 84157213.

It is not an unprimeable number, because it can be changed into a prime (31275143) 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 3 ways as a sum of consecutive naturals, for example, 240 + ... + 7912.

It is an arithmetic number, because the mean of its divisors is an integer number (4566030).

Almost surely, 2^31275148 is an apocalyptic number.

It is an amenable number.

31275148 is a deficient number, since it is larger than the sum of its proper divisors (23517212).

31275148 is a wasteful number, since it uses less digits than its factorization.

31275148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8696 (or 8694 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 31275148 is about 5592.4187969071. The cubic root of 31275148 is about 315.0647318048.

The spelling of 31275148 in words is "thirty-one million, two hundred seventy-five thousand, one hundred forty-eight".