131215032660 has 72 divisors (see below), whose sum is σ = 384070710240. Its totient is φ = 33469333568.

The previous prime is 131215032607. The next prime is 131215032677. The reversal of 131215032660 is 66230512131.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2035290 + ... + 2098769.

It is an arithmetic number, because the mean of its divisors is an integer number (5334315420).

Almost surely, 2^131215032660 is an apocalyptic number.

131215032660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131215032660 is an abundant number, since it is smaller than the sum of its proper divisors (252855677580).

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

131215032660 is a wasteful number, since it uses less digits than its factorization.

131215032660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134117 (or 4134092 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 131215032660 its reverse (66230512131), we get a palindrome (197445544791).

The spelling of 131215032660 in words is "one hundred thirty-one billion, two hundred fifteen million, thirty-two thousand, six hundred sixty".