87031396 has 6 divisors (see below), whose sum is σ = 152304950. Its totient is φ = 43515696.

The previous prime is 87031369. The next prime is 87031423. The reversal of 87031396 is 69313078.

It is an interprime number because it is at equal distance from previous prime (87031369) and next prime (87031423).

It can be written as a sum of positive squares in only one way, i.e., 85377600 + 1653796 = 9240^2 + 1286^2 .

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 as a sum of consecutive naturals, namely, 10878921 + ... + 10878928.

Almost surely, 2^87031396 is an apocalyptic number.

It is an amenable number.

87031396 is a deficient number, since it is larger than the sum of its proper divisors (65273554).

87031396 is a wasteful number, since it uses less digits than its factorization.

87031396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21757853 (or 21757851 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 87031396 is about 9329.0619035356. The cubic root of 87031396 is about 443.1580573571.

The spelling of 87031396 in words is "eighty-seven million, thirty-one thousand, three hundred ninety-six".