230312757021 has 4 divisors (see below), whose sum is σ = 307083676032. Its totient is φ = 153541838012.

The previous prime is 230312756941. The next prime is 230312757067. The reversal of 230312757021 is 120757213032.

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 230312757021 - 2²¹ = 230310659869 is a prime.

It is a super-2 number, since 2×230312757021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230312757091) 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, 38385459501 + ... + 38385459506.

It is an arithmetic number, because the mean of its divisors is an integer number (76770919008).

Almost surely, 2^230312757021 is an apocalyptic number.

It is an amenable number.

230312757021 is a deficient number, since it is larger than the sum of its proper divisors (76770919011).

230312757021 is an equidigital number, since it uses as much as digits as its factorization.

230312757021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76770919010.

The product of its (nonzero) digits is 17640, while the sum is 33.

The spelling of 230312757021 in words is "two hundred thirty billion, three hundred twelve million, seven hundred fifty-seven thousand, twenty-one".