131125590 has 48 divisors (see below), whose sum is σ = 360985248. Its totient is φ = 32909568.

The previous prime is 131125571. The next prime is 131125591. The reversal of 131125590 is 95521131.

131125590 = 1355² + 1356² + ... + 1422².

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131125591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41322 + ... + 44381.

It is an arithmetic number, because the mean of its divisors is an integer number (7520526).

Almost surely, 2^131125590 is an apocalyptic number.

131125590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131125590 is an abundant number, since it is smaller than the sum of its proper divisors (229859658).

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

131125590 is a wasteful number, since it uses less digits than its factorization.

131125590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85733 (or 85730 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 131125590 is about 11451.0082525514. The cubic root of 131125590 is about 508.0375563818.

The spelling of 131125590 in words is "one hundred thirty-one million, one hundred twenty-five thousand, five hundred ninety".