131020386 has 16 divisors (see below), whose sum is σ = 299475264. Its totient is φ = 37434384.

The previous prime is 131020381. The next prime is 131020387. The reversal of 131020386 is 683020131.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131020381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559725 + ... + 1559808.

It is an arithmetic number, because the mean of its divisors is an integer number (18717204).

Almost surely, 2^131020386 is an apocalyptic number.

131020386 is an abundant number, since it is smaller than the sum of its proper divisors (168454878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131020386 is a wasteful number, since it uses less digits than its factorization.

131020386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119545.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 131020386 is about 11446.4136741601. The cubic root of 131020386 is about 507.9016513476.

The spelling of 131020386 in words is "one hundred thirty-one million, twenty thousand, three hundred eighty-six".