263113697331 has 56 divisors (see below), whose sum is σ = 404273943360. Its totient is φ = 171084566016.

The previous prime is 263113697323. The next prime is 263113697449. The reversal of 263113697331 is 133796311362.

263113697331 is a `hidden beast` number, since 2 + 631 + 1 + 3 + 6 + 9 + 7 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 263113697331 - 2³ = 263113697323 is a prime.

It is a super-2 number, since 2×263113697331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (263113697131) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 10025955 + ... + 10052163.

It is an arithmetic number, because the mean of its divisors is an integer number (7219177560).

Almost surely, 2^263113697331 is an apocalyptic number.

263113697331 is a deficient number, since it is larger than the sum of its proper divisors (141160246029).

263113697331 is an equidigital number, since it uses as much as digits as its factorization.

263113697331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26567 (or 26552 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The spelling of 263113697331 in words is "two hundred sixty-three billion, one hundred thirteen million, six hundred ninety-seven thousand, three hundred thirty-one".