1131757673281 has 9 divisors (see below), whose sum is σ = 1134912203841. Its totient is φ = 1128611895444.

The previous prime is 1131757673269. The next prime is 1131757673329. The reversal of 1131757673281 is 1823767571311.

The square root of 1131757673281 is 1063841.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1131757673281 - 2⁹ = 1131757672769 is a prime.

It is a super-2 number, since 2×1131757673281² (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 (1131757673231) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 445748110 + ... + 445750648.

Almost surely, 2^{1131757673281} is an apocalyptic number.

1131757673281 is the 1063841-st square number.

1131757673281 is the 531921-st centered octagonal number.

It is an amenable number.

1131757673281 is a deficient number, since it is larger than the sum of its proper divisors (3154530560).

1131757673281 is an frugal number, since it uses more digits than its factorization.

1131757673281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916 (or 2958 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 52.

The spelling of 1131757673281 in words is "one trillion, one hundred thirty-one billion, seven hundred fifty-seven million, six hundred seventy-three thousand, two hundred eighty-one".