1311044031 has 12 divisors (see below), whose sum is σ = 2065887720. Its totient is φ = 794572080.

The previous prime is 1311044017. The next prime is 1311044041. The reversal of 1311044031 is 1304401131.

It is not a de Polignac number, because 1311044031 - 2¹⁴ = 1311027647 is a prime.

It is a super-2 number, since 2×1311044031² = 3437672902441457922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311043995 and 1311044013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311044041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6621336 + ... + 6621533.

It is an arithmetic number, because the mean of its divisors is an integer number (172157310).

Almost surely, 2^1311044031 is an apocalyptic number.

1311044031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311044031 is a deficient number, since it is larger than the sum of its proper divisors (754843689).

1311044031 is a wasteful number, since it uses less digits than its factorization.

1311044031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13242886 (or 13242883 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1311044031 is about 36208.3420084378. The cubic root of 1311044031 is about 1094.4747815832.

Adding to 1311044031 its reverse (1304401131), we get a palindrome (2615445162).

The spelling of 1311044031 in words is "one billion, three hundred eleven million, forty-four thousand, thirty-one".