1312324400 has 30 divisors (see below), whose sum is σ = 3152860332. Its totient is φ = 524929600.

The previous prime is 1312324393. The next prime is 1312324427. The reversal of 1312324400 is 44232131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1640006 + ... + 1640805.

Almost surely, 2^1312324400 is an apocalyptic number.

1312324400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312324400 is an abundant number, since it is smaller than the sum of its proper divisors (1840535932).

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

1312324400 is a wasteful number, since it uses less digits than its factorization.

1312324400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280829 (or 3280818 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1312324400 is about 36226.0182741631. The cubic root of 1312324400 is about 1094.8309546316.

Adding to 1312324400 its reverse (44232131), we get a palindrome (1356556531).

The spelling of 1312324400 in words is "one billion, three hundred twelve million, three hundred twenty-four thousand, four hundred".