131386799721723 has 48 divisors (see below), whose sum is σ = 219744654988320. Its totient is φ = 69212805709824.

The previous prime is 131386799721713. The next prime is 131386799721763. The reversal of 131386799721723 is 327127997683131.

It is not a de Polignac number, because 131386799721723 - 2¹² = 131386799717627 is a prime.

It is a super-2 number, since 2×131386799721723² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131386799721703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43233240 + ... + 46172357.

It is an arithmetic number, because the mean of its divisors is an integer number (4578013645590).

Almost surely, 2^{131386799721723} is an apocalyptic number.

131386799721723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131386799721723 is a deficient number, since it is larger than the sum of its proper divisors (88357855266597).

131386799721723 is a wasteful number, since it uses less digits than its factorization.

131386799721723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89406396 (or 89406389 counting only the distinct ones).

The product of its digits is 144027072, while the sum is 69.

The spelling of 131386799721723 in words is "one hundred thirty-one trillion, three hundred eighty-six billion, seven hundred ninety-nine million, seven hundred twenty-one thousand, seven hundred twenty-three".