913021213 has 16 divisors (see below), whose sum is σ = 1011378816. Its totient is φ = 818752320.

The previous prime is 913021211. The next prime is 913021223. The reversal of 913021213 is 312120319.

It is a cyclic number.

It is not a de Polignac number, because 913021213 - 2¹ = 913021211 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 (913021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471858 + ... + 473788.

It is an arithmetic number, because the mean of its divisors is an integer number (63211176).

Almost surely, 2^913021213 is an apocalyptic number.

It is an amenable number.

913021213 is a deficient number, since it is larger than the sum of its proper divisors (98357603).

913021213 is a wasteful number, since it uses less digits than its factorization.

913021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 913021213 is about 30216.2408813539. The cubic root of 913021213 is about 970.1233459896.

The spelling of 913021213 in words is "nine hundred thirteen million, twenty-one thousand, two hundred thirteen".