131078636 has 24 divisors (see below), whose sum is σ = 261565920. Its totient is φ = 56938752.

The previous prime is 131078627. The next prime is 131078659. The reversal of 131078636 is 636870131.

It is a junction number, because it is equal to n+sod(n) for n = 131078596 and 131078605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73256 + ... + 75023.

It is an arithmetic number, because the mean of its divisors is an integer number (10898580).

Almost surely, 2^131078636 is an apocalyptic number.

It is an amenable number.

131078636 is a deficient number, since it is larger than the sum of its proper divisors (130487284).

131078636 is a wasteful number, since it uses less digits than its factorization.

131078636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148313 (or 148311 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 131078636 is about 11448.9578565038. The cubic root of 131078636 is about 507.9769090709.

The spelling of 131078636 in words is "one hundred thirty-one million, seventy-eight thousand, six hundred thirty-six".