131324511516 has 48 divisors (see below), whose sum is σ = 340587773568. Its totient is φ = 39044449600.

The previous prime is 131324511511. The next prime is 131324511523. The reversal of 131324511516 is 615115423131.

It is a happy number.

It is a super-2 number, since 2×131324511516² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131324511511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9378690 + ... + 9392681.

It is an arithmetic number, because the mean of its divisors is an integer number (7095578616).

Almost surely, 2^131324511516 is an apocalyptic number.

It is an amenable number.

131324511516 is an abundant number, since it is smaller than the sum of its proper divisors (209263262052).

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

131324511516 is a wasteful number, since it uses less digits than its factorization.

131324511516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18771442 (or 18771440 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

Adding to 131324511516 its reverse (615115423131), we get a palindrome (746439934647).

The spelling of 131324511516 in words is "one hundred thirty-one billion, three hundred twenty-four million, five hundred eleven thousand, five hundred sixteen".