87131036 has 12 divisors (see below), whose sum is σ = 160504680. Its totient is φ = 41272560.

The previous prime is 87130957. The next prime is 87131071. The reversal of 87131036 is 63013178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573155 + ... + 573306.

It is an arithmetic number, because the mean of its divisors is an integer number (13375390).

Almost surely, 2^87131036 is an apocalyptic number.

It is an amenable number.

87131036 is a deficient number, since it is larger than the sum of its proper divisors (73373644).

87131036 is a wasteful number, since it uses less digits than its factorization.

87131036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146484 (or 1146482 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 87131036 is about 9334.4006770655. The cubic root of 87131036 is about 443.3271129334.

It can be divided in two parts, 871310 and 36, that multiplied together give a triangular number (31367160 = T₇₉₂₀).

The spelling of 87131036 in words is "eighty-seven million, one hundred thirty-one thousand, thirty-six".