13012957 has 4 divisors (see below), whose sum is σ = 13159260. Its totient is φ = 12866656.

The previous prime is 13012943. The next prime is 13012969. The reversal of 13012957 is 75921031.

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 8826841 + 4186116 = 2971^2 + 2046^2 .

It is a cyclic number.

It is not a de Polignac number, because 13012957 - 2¹¹ = 13010909 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 (13012927) 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, 73018 + ... + 73195.

It is an arithmetic number, because the mean of its divisors is an integer number (3289815).

Almost surely, 2^13012957 is an apocalyptic number.

It is an amenable number.

13012957 is a deficient number, since it is larger than the sum of its proper divisors (146303).

13012957 is an equidigital number, since it uses as much as digits as its factorization.

13012957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146302.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 13012957 is about 3607.3476405803. The cubic root of 13012957 is about 235.2115614062.

Adding to 13012957 its reverse (75921031), we get a palindrome (88933988).

The spelling of 13012957 in words is "thirteen million, twelve thousand, nine hundred fifty-seven".