13156013 has 8 divisors (see below), whose sum is σ = 14315448. Its totient is φ = 12017664.

The previous prime is 13156009. The next prime is 13156019. The reversal of 13156013 is 31065131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 779689 + 12376324 = 883^2 + 3518^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13156013 - 2² = 13156009 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 (13156019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3956 + ... + 6477.

It is an arithmetic number, because the mean of its divisors is an integer number (1789431).

Almost surely, 2^13156013 is an apocalyptic number.

13156013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13156013 is a deficient number, since it is larger than the sum of its proper divisors (1159435).

13156013 is a wasteful number, since it uses less digits than its factorization.

13156013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10543.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 13156013 is about 3627.1218617521. The cubic root of 13156013 is about 236.0703431506.

The spelling of 13156013 in words is "thirteen million, one hundred fifty-six thousand, thirteen".