13131013 has 4 divisors (see below), whose sum is σ = 15006880. Its totient is φ = 11255148.

The previous prime is 13130989. The next prime is 13131017. The reversal of 13131013 is 31013131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13131013 - 2¹⁷ = 12999941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13130984 and 13131002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131017) 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, 937923 + ... + 937936.

It is an arithmetic number, because the mean of its divisors is an integer number (3751720).

Almost surely, 2^13131013 is an apocalyptic number.

It is an amenable number.

13131013 is a deficient number, since it is larger than the sum of its proper divisors (1875867).

13131013 is an equidigital number, since it uses as much as digits as its factorization.

13131013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875866.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 13131013 is about 3623.6739643627. The cubic root of 13131013 is about 235.9207157307.

Adding to 13131013 its reverse (31013131), we get a palindrome (44144144).

The spelling of 13131013 in words is "thirteen million, one hundred thirty-one thousand, thirteen".