1131728596931 has 8 divisors (see below), whose sum is σ = 1143431209200. Its totient is φ = 1120026705408.

The previous prime is 1131728596927. The next prime is 1131728596967. The reversal of 1131728596931 is 1396958271311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131728596931 - 2² = 1131728596927 is a prime.

It is a super-2 number, since 2×1131728596931² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131728596231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3327620 + ... + 3651918.

It is an arithmetic number, because the mean of its divisors is an integer number (142928901150).

Almost surely, 2^{1131728596931} is an apocalyptic number.

1131728596931 is a deficient number, since it is larger than the sum of its proper divisors (11702612269).

1131728596931 is an equidigital number, since it uses as much as digits as its factorization.

1131728596931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360373.

The product of its digits is 2449440, while the sum is 56.

The spelling of 1131728596931 in words is "one trillion, one hundred thirty-one billion, seven hundred twenty-eight million, five hundred ninety-six thousand, nine hundred thirty-one".