1313245031 has 6 divisors (see below), whose sum is σ = 1527652440. Its totient is φ = 1125638556.

The previous prime is 1313244973. The next prime is 1313245051. The reversal of 1313245031 is 1305423131.

It is not a de Polignac number, because 1313245031 - 2²⁶ = 1246136167 is a prime.

It is a super-2 number, since 2×1313245031² = 3449225022892381922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313244988 and 1313245006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313245051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13400411 + ... + 13400508.

It is an arithmetic number, because the mean of its divisors is an integer number (254608740).

Almost surely, 2^1313245031 is an apocalyptic number.

1313245031 is a deficient number, since it is larger than the sum of its proper divisors (214407409).

1313245031 is an equidigital number, since it uses as much as digits as its factorization.

1313245031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26800933 (or 26800926 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1313245031 is about 36238.7228113795. The cubic root of 1313245031 is about 1095.0869126124.

Adding to 1313245031 its reverse (1305423131), we get a palindrome (2618668162).

The spelling of 1313245031 in words is "one billion, three hundred thirteen million, two hundred forty-five thousand, thirty-one".