1312421304 has 32 divisors (see below), whose sum is σ = 3282405120. Its totient is φ = 437293536.

The previous prime is 1312421281. The next prime is 1312421321. The reversal of 1312421304 is 4031242131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56527 + ... + 76289.

It is an arithmetic number, because the mean of its divisors is an integer number (102575160).

Almost surely, 2^1312421304 is an apocalyptic number.

It is an amenable number.

1312421304 is an abundant number, since it is smaller than the sum of its proper divisors (1969983816).

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

1312421304 is a wasteful number, since it uses less digits than its factorization.

1312421304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22539 (or 22535 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1312421304 is about 36227.3557412075. The cubic root of 1312421304 is about 1094.8579019544.

Adding to 1312421304 its reverse (4031242131), we get a palindrome (5343663435).

The spelling of 1312421304 in words is "one billion, three hundred twelve million, four hundred twenty-one thousand, three hundred four".