1312655460 has 48 divisors (see below), whose sum is σ = 3707980416. Its totient is φ = 346941952.

The previous prime is 1312655441. The next prime is 1312655479. The reversal of 1312655460 is 645562131.

It is an interprime number because it is at equal distance from previous prime (1312655441) and next prime (1312655479).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90024 + ... + 103583.

It is an arithmetic number, because the mean of its divisors is an integer number (77249592).

Almost surely, 2^1312655460 is an apocalyptic number.

1312655460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312655460 is an abundant number, since it is smaller than the sum of its proper divisors (2395324956).

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

1312655460 is a wasteful number, since it uses less digits than its factorization.

1312655460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193732 (or 193730 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1312655460 is about 36230.5873537816. The cubic root of 1312655460 is about 1094.9230112048.

It can be divided in two parts, 13126 and 55460, that added together give a palindrome (68586).

The spelling of 1312655460 in words is "one billion, three hundred twelve million, six hundred fifty-five thousand, four hundred sixty".