234311621 has 4 divisors (see below), whose sum is σ = 234432000. Its totient is φ = 234191244.

The previous prime is 234311611. The next prime is 234311633. The reversal of 234311621 is 126113432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 234311621 - 2²² = 230117317 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 (234311611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57221 + ... + 61178.

It is an arithmetic number, because the mean of its divisors is an integer number (58608000).

Almost surely, 2^234311621 is an apocalyptic number.

It is an amenable number.

234311621 is a deficient number, since it is larger than the sum of its proper divisors (120379).

234311621 is a wasteful number, since it uses less digits than its factorization.

234311621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120378.

The product of its digits is 864, while the sum is 23.

The square root of 234311621 is about 15307.2408029664. The cubic root of 234311621 is about 616.4974380861.

It can be divided in two parts, 23431 and 1621, that added together give a palindrome (25052).

The spelling of 234311621 in words is "two hundred thirty-four million, three hundred eleven thousand, six hundred twenty-one".