1311231304 has 32 divisors (see below), whose sum is σ = 2566425600. Its totient is φ = 627327360.

The previous prime is 1311231277. The next prime is 1311231307. The reversal of 1311231304 is 4031321131.

It is not an unprimeable number, because it can be changed into a prime (1311231307) 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, 7632 + ... + 51775.

It is an arithmetic number, because the mean of its divisors is an integer number (80200800).

Almost surely, 2^1311231304 is an apocalyptic number.

It is an amenable number.

1311231304 is a deficient number, since it is larger than the sum of its proper divisors (1255194296).

1311231304 is a wasteful number, since it uses less digits than its factorization.

1311231304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59533 (or 59529 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1311231304 is about 36210.9279638067. The cubic root of 1311231304 is about 1094.5268916604.

Adding to 1311231304 its reverse (4031321131), we get a palindrome (5342552435).

The spelling of 1311231304 in words is "one billion, three hundred eleven million, two hundred thirty-one thousand, three hundred four".