1312413320 has 32 divisors (see below), whose sum is σ = 3021606720. Its totient is φ = 512756160.

The previous prime is 1312413293. The next prime is 1312413359. The reversal of 1312413320 is 233142131.

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

It is a junction number, because it is equal to n+sod(n) for n = 1312413292 and 1312413301.

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, 379796 + ... + 383235.

It is an arithmetic number, because the mean of its divisors is an integer number (94425210).

Almost surely, 2^1312413320 is an apocalyptic number.

1312413320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312413320 is an abundant number, since it is smaller than the sum of its proper divisors (1709193400).

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

1312413320 is a wasteful number, since it uses less digits than its factorization.

1312413320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763085 (or 763081 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1312413320 is about 36227.2455480678. The cubic root of 1312413320 is about 1094.8556817925.

Adding to 1312413320 its reverse (233142131), we get a palindrome (1545555451).

The spelling of 1312413320 in words is "one billion, three hundred twelve million, four hundred thirteen thousand, three hundred twenty".