131590620 has 144 divisors (see below), whose sum is σ = 459496128. Its totient is φ = 29859840.

The previous prime is 131590583. The next prime is 131590639. The reversal of 131590620 is 26095131.

131590620 is a `hidden beast` number, since 1 + 31 + 5 + 9 + 0 + 620 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227772 + ... + 228348.

Almost surely, 2^131590620 is an apocalyptic number.

131590620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131590620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229748064).

131590620 is an abundant number, since it is smaller than the sum of its proper divisors (327905508).

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

131590620 is a wasteful number, since it uses less digits than its factorization.

131590620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 131590620 is about 11471.2954804590. The cubic root of 131590620 is about 508.6374239538.

The spelling of 131590620 in words is "one hundred thirty-one million, five hundred ninety thousand, six hundred twenty".