1313131301213 has 4 divisors (see below), whose sum is σ = 1358411690940. Its totient is φ = 1267850911488.

The previous prime is 1313131301173. The next prime is 1313131301219. The reversal of 1313131301213 is 3121031313131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 588108001924 + 725023299289 = 766882^2 + 851483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313131301213 - 2⁶ = 1313131301149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313131301219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22640194820 + ... + 22640194877.

It is an arithmetic number, because the mean of its divisors is an integer number (339602922735).

Almost surely, 2^{1313131301213} is an apocalyptic number.

It is an amenable number.

1313131301213 is a deficient number, since it is larger than the sum of its proper divisors (45280389727).

1313131301213 is an equidigital number, since it uses as much as digits as its factorization.

1313131301213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45280389726.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1313131301213 its reverse (3121031313131), we get a palindrome (4434162614344).

The spelling of 1313131301213 in words is "one trillion, three hundred thirteen billion, one hundred thirty-one million, three hundred one thousand, two hundred thirteen".