234013021 has 4 divisors (see below), whose sum is σ = 255286944. Its totient is φ = 212739100.

The previous prime is 234013001. The next prime is 234013027. The reversal of 234013021 is 120310432.

It is a happy number.

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 234013021 - 2⁹ = 234012509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234012986 and 234013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234013027) 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, 10636945 + ... + 10636966.

It is an arithmetic number, because the mean of its divisors is an integer number (63821736).

Almost surely, 2^234013021 is an apocalyptic number.

It is an amenable number.

234013021 is a deficient number, since it is larger than the sum of its proper divisors (21273923).

234013021 is a wasteful number, since it uses less digits than its factorization.

234013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21273922.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 234013021 is about 15297.4841395571. The cubic root of 234013021 is about 616.2354445528.

Adding to 234013021 its reverse (120310432), we get a palindrome (354323453).

The spelling of 234013021 in words is "two hundred thirty-four million, thirteen thousand, twenty-one".