131512056 has 64 divisors (see below), whose sum is σ = 356966400. Its totient is φ = 40134528.

The previous prime is 131512049. The next prime is 131512057. The reversal of 131512056 is 650215131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131512057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37965 + ... + 41283.

It is an arithmetic number, because the mean of its divisors is an integer number (5577600).

Almost surely, 2^131512056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131512056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178483200).

131512056 is an abundant number, since it is smaller than the sum of its proper divisors (225454344).

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

131512056 is a wasteful number, since it uses less digits than its factorization.

131512056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468 (or 3464 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 131512056 is about 11467.8705957122. The cubic root of 131512056 is about 508.5361792860.

Adding to 131512056 its reverse (650215131), we get a palindrome (781727187).

The spelling of 131512056 in words is "one hundred thirty-one million, five hundred twelve thousand, fifty-six".