263135631231 has 48 divisors (see below), whose sum is σ = 462135248640. Its totient is φ = 142195426560.

The previous prime is 263135631217. The next prime is 263135631257. The reversal of 263135631231 is 132136531362.

263135631231 is a `hidden beast` number, since 2 + 6 + 3 + 13 + 5 + 631 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 263135631231 - 2⁶ = 263135631167 is a prime.

It is a super-2 number, since 2×263135631231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263135631211) 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, 4082475 + ... + 4146428.

It is an arithmetic number, because the mean of its divisors is an integer number (9627817680).

Almost surely, 2^263135631231 is an apocalyptic number.

263135631231 is a deficient number, since it is larger than the sum of its proper divisors (198999617409).

263135631231 is a wasteful number, since it uses less digits than its factorization.

263135631231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8228956 (or 8228953 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The spelling of 263135631231 in words is "two hundred sixty-three billion, one hundred thirty-five million, six hundred thirty-one thousand, two hundred thirty-one".