1131944831 has 2 divisors, whose sum is σ = 1131944832. Its totient is φ = 1131944830.

The previous prime is 1131944659. The next prime is 1131944909. The reversal of 1131944831 is 1384491311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131944831 - 2¹⁰ = 1131943807 is a prime.

It is a super-2 number, since 2×1131944831² = 2562598200855237122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131944791 and 1131944800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131944131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565972415 + 565972416.

It is an arithmetic number, because the mean of its divisors is an integer number (565972416).

Almost surely, 2^1131944831 is an apocalyptic number.

1131944831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131944831 is an equidigital number, since it uses as much as digits as its factorization.

1131944831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 1131944831 is about 33644.3878083701. The cubic root of 1131944831 is about 1042.1776458309.

The spelling of 1131944831 in words is "one billion, one hundred thirty-one million, nine hundred forty-four thousand, eight hundred thirty-one".