13013391 has 16 divisors (see below), whose sum is σ = 17867520. Its totient is φ = 8420160.

The previous prime is 13013389. The next prime is 13013393. The reversal of 13013391 is 19331031.

13013391 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13013389) and next prime (13013393).

It is not a de Polignac number, because 13013391 - 2¹ = 13013389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36070 + ... + 36428.

It is an arithmetic number, because the mean of its divisors is an integer number (1116720).

Almost surely, 2^13013391 is an apocalyptic number.

13013391 is a deficient number, since it is larger than the sum of its proper divisors (4854129).

13013391 is a wasteful number, since it uses less digits than its factorization.

13013391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 13013391 is about 3607.4077950795. The cubic root of 13013391 is about 235.2141762535.

The spelling of 13013391 in words is "thirteen million, thirteen thousand, three hundred ninety-one".