103131987 has 32 divisors (see below), whose sum is σ = 162292224. Its totient is φ = 57024000.

The previous prime is 103131983. The next prime is 103131997. The reversal of 103131987 is 789131301.

It is not a de Polignac number, because 103131987 - 2² = 103131983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103131983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256987 + ... + 257387.

It is an arithmetic number, because the mean of its divisors is an integer number (5071632).

Almost surely, 2^103131987 is an apocalyptic number.

103131987 is a deficient number, since it is larger than the sum of its proper divisors (59160237).

103131987 is a wasteful number, since it uses less digits than its factorization.

103131987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 103131987 is about 10155.3920160671. The cubic root of 103131987 is about 468.9549543557.

The spelling of 103131987 in words is "one hundred three million, one hundred thirty-one thousand, nine hundred eighty-seven".