1318961031 has 12 divisors (see below), whose sum is σ = 1868149032. Its totient is φ = 827582848.

The previous prime is 1318961009. The next prime is 1318961071. The reversal of 1318961031 is 1301698131.

It is a happy number.

It is not a de Polignac number, because 1318961031 - 2²² = 1314766727 is a prime.

It is a super-2 number, since 2×1318961031² = 3479316402593165922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1318960983 and 1318961001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318961071) 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, 759780 + ... + 761513.

It is an arithmetic number, because the mean of its divisors is an integer number (155679086).

Almost surely, 2^1318961031 is an apocalyptic number.

1318961031 is a deficient number, since it is larger than the sum of its proper divisors (549188001).

1318961031 is a wasteful number, since it uses less digits than its factorization.

1318961031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521330 (or 1521313 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1318961031 is about 36317.5030942382. The cubic root of 1318961031 is about 1096.6734296917.

The spelling of 1318961031 in words is "one billion, three hundred eighteen million, nine hundred sixty-one thousand, thirty-one".