131815130 has 16 divisors (see below), whose sum is σ = 240809760. Its totient is φ = 51938832.

The previous prime is 131815129. The next prime is 131815147. The reversal of 131815130 is 31518131.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 131815096 and 131815105.

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, 97700 + ... + 99039.

It is an arithmetic number, because the mean of its divisors is an integer number (15050610).

Almost surely, 2^131815130 is an apocalyptic number.

131815130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131815130 is a deficient number, since it is larger than the sum of its proper divisors (108994630).

131815130 is a wasteful number, since it uses less digits than its factorization.

131815130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196813.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 131815130 is about 11481.0770400690. The cubic root of 131815130 is about 508.9265258831.

The spelling of 131815130 in words is "one hundred thirty-one million, eight hundred fifteen thousand, one hundred thirty".