1311372404 has 6 divisors (see below), whose sum is σ = 2294901714. Its totient is φ = 655686200.

The previous prime is 1311372397. The next prime is 1311372407. The reversal of 1311372404 is 4042731131.

It can be written as a sum of positive squares in only one way, i.e., 1283788900 + 27583504 = 35830^2 + 5252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311372407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163921547 + ... + 163921554.

It is an arithmetic number, because the mean of its divisors is an integer number (382483619).

Almost surely, 2^1311372404 is an apocalyptic number.

It is an amenable number.

1311372404 is a deficient number, since it is larger than the sum of its proper divisors (983529310).

1311372404 is a wasteful number, since it uses less digits than its factorization.

1311372404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327843105 (or 327843103 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1311372404 is about 36212.8762182735. The cubic root of 1311372404 is about 1094.5661504865.

The spelling of 1311372404 in words is "one billion, three hundred eleven million, three hundred seventy-two thousand, four hundred four".