131512724 has 12 divisors (see below), whose sum is σ = 263025504. Its totient is φ = 56362584.

The previous prime is 131512687. The next prime is 131512727. The reversal of 131512724 is 427215131.

131512724 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 131512693 and 131512702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131512727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348414 + ... + 2348469.

It is an arithmetic number, because the mean of its divisors is an integer number (21918792).

Almost surely, 2^131512724 is an apocalyptic number.

131512724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131512724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131512724 is a wasteful number, since it uses less digits than its factorization.

131512724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696894 (or 4696892 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 131512724 is about 11467.8997205242. The cubic root of 131512724 is about 508.5370403011.

Adding to 131512724 its reverse (427215131), we get a palindrome (558727855).

The spelling of 131512724 in words is "one hundred thirty-one million, five hundred twelve thousand, seven hundred twenty-four".