1313031002 has 4 divisors (see below), whose sum is σ = 1969546506. Its totient is φ = 656515500.

The previous prime is 1313030993. The next prime is 1313031019. The reversal of 1313031002 is 2001303131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 992943121 + 320087881 = 31511^2 + 17891^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328257749 + ... + 328257752.

Almost surely, 2^1313031002 is an apocalyptic number.

1313031002 is a deficient number, since it is larger than the sum of its proper divisors (656515504).

1313031002 is an equidigital number, since it uses as much as digits as its factorization.

1313031002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656515503.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1313031002 is about 36235.7696482357. The cubic root of 1313031002 is about 1095.0274179800.

Adding to 1313031002 its reverse (2001303131), we get a palindrome (3314334133).

The spelling of 1313031002 in words is "one billion, three hundred thirteen million, thirty-one thousand, two".