1311032904 has 32 divisors (see below), whose sum is σ = 3383312640. Its totient is φ = 422913600.

The previous prime is 1311032903. The next prime is 1311032909. The reversal of 1311032904 is 4092301131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1311032903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880327 + ... + 881814.

It is an arithmetic number, because the mean of its divisors is an integer number (105728520).

Almost surely, 2^1311032904 is an apocalyptic number.

It is an amenable number.

1311032904 is an abundant number, since it is smaller than the sum of its proper divisors (2072279736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311032904 is a wasteful number, since it uses less digits than its factorization.

1311032904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762181 (or 1762177 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1311032904 is about 36208.1883556745. The cubic root of 1311032904 is about 1094.4716852581.

The spelling of 1311032904 in words is "one billion, three hundred eleven million, thirty-two thousand, nine hundred four".