230013020232521 has 2 divisors, whose sum is σ = 230013020232522. Its totient is φ = 230013020232520.

The previous prime is 230013020232511. The next prime is 230013020232559. The reversal of 230013020232521 is 125232020310032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136360736569600 + 93652283662921 = 11677360^2 + 9677411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230013020232521 is a prime.

It is a super-2 number, since 2×230013020232521² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (230013020232511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115006510116260 + 115006510116261.

It is an arithmetic number, because the mean of its divisors is an integer number (115006510116261).

Almost surely, 2^{230013020232521} is an apocalyptic number.

It is an amenable number.

230013020232521 is a deficient number, since it is larger than the sum of its proper divisors (1).

230013020232521 is an equidigital number, since it uses as much as digits as its factorization.

230013020232521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 230013020232521 its reverse (125232020310032), we get a palindrome (355245040542553).

The spelling of 230013020232521 in words is "two hundred thirty trillion, thirteen billion, twenty million, two hundred thirty-two thousand, five hundred twenty-one".