13213230949 has 2 divisors, whose sum is σ = 13213230950. Its totient is φ = 13213230948.

The previous prime is 13213230907. The next prime is 13213231043. The reversal of 13213230949 is 94903231231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12649500900 + 563730049 = 112470^2 + 23743^2 .

It is a cyclic number.

It is not a de Polignac number, because 13213230949 - 2¹¹ = 13213228901 is a prime.

It is a super-2 number, since 2×13213230949² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13213237949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606615474 + 6606615475.

It is an arithmetic number, because the mean of its divisors is an integer number (6606615475).

Almost surely, 2^13213230949 is an apocalyptic number.

It is an amenable number.

13213230949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13213230949 is an equidigital number, since it uses as much as digits as its factorization.

13213230949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 13213230949 in words is "thirteen billion, two hundred thirteen million, two hundred thirty thousand, nine hundred forty-nine".