31528052 has 6 divisors (see below), whose sum is σ = 55174098. Its totient is φ = 15764024.

The previous prime is 31528037. The next prime is 31528067. The reversal of 31528052 is 25082513.

It is an interprime number because it is at equal distance from previous prime (31528037) and next prime (31528067).

It can be written as a sum of positive squares in only one way, i.e., 26173456 + 5354596 = 5116^2 + 2314^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3941003 + ... + 3941010.

It is an arithmetic number, because the mean of its divisors is an integer number (9195683).

Almost surely, 2^31528052 is an apocalyptic number.

It is an amenable number.

31528052 is a deficient number, since it is larger than the sum of its proper divisors (23646046).

31528052 is a wasteful number, since it uses less digits than its factorization.

31528052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7882017 (or 7882015 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 31528052 is about 5614.9845948141. The cubic root of 31528052 is about 315.9117015485.

The spelling of 31528052 in words is "thirty-one million, five hundred twenty-eight thousand, fifty-two".