230311203213 has 48 divisors (see below), whose sum is σ = 385949699520. Its totient is φ = 121086814464.

The previous prime is 230311203203. The next prime is 230311203337. The reversal of 230311203213 is 312302113032.

It is not a de Polignac number, because 230311203213 - 2³³ = 221721268621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 230311203213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230311203203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 390393 + ... + 782961.

It is an arithmetic number, because the mean of its divisors is an integer number (8040618740).

Almost surely, 2^230311203213 is an apocalyptic number.

It is an amenable number.

230311203213 is a deficient number, since it is larger than the sum of its proper divisors (155638496307).

230311203213 is a wasteful number, since it uses less digits than its factorization.

230311203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392906 (or 392899 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 230311203213 its reverse (312302113032), we get a palindrome (542613316245).

The spelling of 230311203213 in words is "two hundred thirty billion, three hundred eleven million, two hundred three thousand, two hundred thirteen".