1313220232 has 16 divisors (see below), whose sum is σ = 2514677760. Its totient is φ = 642639504.

The previous prime is 1313220217. The next prime is 1313220247. The reversal of 1313220232 is 2320223131.

It is an interprime number because it is at equal distance from previous prime (1313220217) and next prime (1313220247).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745928 + ... + 1746679.

It is an arithmetic number, because the mean of its divisors is an integer number (157167360).

Almost surely, 2^1313220232 is an apocalyptic number.

It is an amenable number.

1313220232 is a deficient number, since it is larger than the sum of its proper divisors (1201457528).

1313220232 is a wasteful number, since it uses less digits than its factorization.

1313220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492660 (or 3492656 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1313220232 is about 36238.3806481471. The cubic root of 1313220232 is about 1095.0800194506.

Adding to 1313220232 its reverse (2320223131), we get a palindrome (3633443363).

The spelling of 1313220232 in words is "one billion, three hundred thirteen million, two hundred twenty thousand, two hundred thirty-two".