131245530 has 32 divisors (see below), whose sum is σ = 339220224. Its totient is φ = 32306496.

The previous prime is 131245529. The next prime is 131245547. The reversal of 131245530 is 35542131.

It is a self number, because there is not a number n which added to its sum of digits gives 131245530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167874 + ... + 168653.

It is an arithmetic number, because the mean of its divisors is an integer number (10600632).

Almost surely, 2^131245530 is an apocalyptic number.

131245530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131245530 is an abundant number, since it is smaller than the sum of its proper divisors (207974694).

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

131245530 is a wasteful number, since it uses less digits than its factorization.

131245530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336550.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 131245530 is about 11456.2441489347. The cubic root of 131245530 is about 508.1924090826.

Adding to 131245530 its reverse (35542131), we get a palindrome (166787661).

The spelling of 131245530 in words is "one hundred thirty-one million, two hundred forty-five thousand, five hundred thirty".