131512230 has 48 divisors (see below), whose sum is σ = 352969344. Its totient is φ = 33937920.

The previous prime is 131512207. The next prime is 131512253. The reversal of 131512230 is 32215131.

131512230 is a `hidden beast` number, since 131 + 512 + 23 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (131512207) and next prime (131512253).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20779 + ... + 26358.

It is an arithmetic number, because the mean of its divisors is an integer number (7353528).

Almost surely, 2^131512230 is an apocalyptic number.

131512230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131512230 is an abundant number, since it is smaller than the sum of its proper divisors (221457114).

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

131512230 is a wasteful number, since it uses less digits than its factorization.

131512230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47181 (or 47178 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131512230 is about 11467.8781821224. The cubic root of 131512230 is about 508.5364035627.

Adding to 131512230 its reverse (32215131), we get a palindrome (163727361).

The spelling of 131512230 in words is "one hundred thirty-one million, five hundred twelve thousand, two hundred thirty".