1313265402 has 24 divisors (see below), whose sum is σ = 3012786036. Its totient is φ = 412004736.

The previous prime is 1313265397. The next prime is 1313265403. The reversal of 1313265402 is 2045623131.

1313265402 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 2 + 654 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1297512441 + 15752961 = 36021^2 + 3969^2 .

It is not an unprimeable number, because it can be changed into a prime (1313265403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2145553 + ... + 2146164.

Almost surely, 2^1313265402 is an apocalyptic number.

1313265402 is an abundant number, since it is smaller than the sum of its proper divisors (1699520634).

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

1313265402 is a wasteful number, since it uses less digits than its factorization.

1313265402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291742 (or 4291739 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1313265402 is about 36239.0038770383. The cubic root of 1313265402 is about 1095.0925748967.

Adding to 1313265402 its reverse (2045623131), we get a palindrome (3358888533).

The spelling of 1313265402 in words is "one billion, three hundred thirteen million, two hundred sixty-five thousand, four hundred two".