913201231231213 has 4 divisors (see below), whose sum is σ = 966918950715420. Its totient is φ = 859483511747008.

The previous prime is 913201231231001. The next prime is 913201231231249. The reversal of 913201231231213 is 312132132102319.

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 411693960999049 + 501507270232164 = 20290243^2 + 22394358^2 .

It is a cyclic number.

It is not a de Polignac number, because 913201231231213 - 2⁴¹ = 911002207975661 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 (913201231241213) 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, 26858859742078 + ... + 26858859742111.

It is an arithmetic number, because the mean of its divisors is an integer number (241729737678855).

Almost surely, 2^{913201231231213} is an apocalyptic number.

It is an amenable number.

913201231231213 is a deficient number, since it is larger than the sum of its proper divisors (53717719484207).

913201231231213 is a wasteful number, since it uses less digits than its factorization.

913201231231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53717719484206.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 913201231231213 in words is "nine hundred thirteen trillion, two hundred one billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred thirteen".