1312135330 has 32 divisors (see below), whose sum is σ = 2592399168. Its totient is φ = 474206400.

The previous prime is 1312135289. The next prime is 1312135373. The reversal of 1312135330 is 335312131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 18661 + ... + 54520.

It is an arithmetic number, because the mean of its divisors is an integer number (81012474).

Almost surely, 2^1312135330 is an apocalyptic number.

1312135330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312135330 is a deficient number, since it is larger than the sum of its proper divisors (1280263838).

1312135330 is a wasteful number, since it uses less digits than its factorization.

1312135330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73362.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 1312135330 is about 36223.4085916828. The cubic root of 1312135330 is about 1094.7783737224.

Adding to 1312135330 its reverse (335312131), we get a palindrome (1647447461).

The spelling of 1312135330 in words is "one billion, three hundred twelve million, one hundred thirty-five thousand, three hundred thirty".