1231268886771 has 16 divisors (see below), whose sum is σ = 2046784643328. Its totient is φ = 639620200800.

The previous prime is 1231268886739. The next prime is 1231268886823. The reversal of 1231268886771 is 1776888621321.

It is not a de Polignac number, because 1231268886771 - 2⁵ = 1231268886739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231268886671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2665083940 + ... + 2665084401.

It is an arithmetic number, because the mean of its divisors is an integer number (127924040208).

Almost surely, 2^{1231268886771} is an apocalyptic number.

1231268886771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1231268886771 is a deficient number, since it is larger than the sum of its proper divisors (815515756557).

1231268886771 is a wasteful number, since it uses less digits than its factorization.

1231268886771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330168362.

The product of its digits is 10838016, while the sum is 60.

The spelling of 1231268886771 in words is "one trillion, two hundred thirty-one billion, two hundred sixty-eight million, eight hundred eighty-six thousand, seven hundred seventy-one".