230439914981 has 2 divisors, whose sum is σ = 230439914982. Its totient is φ = 230439914980.

The previous prime is 230439914977. The next prime is 230439914983. The reversal of 230439914981 is 189419934032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153769073956 + 76670841025 = 392134^2 + 276895^2 .

It is a cyclic number.

It is not a de Polignac number, because 230439914981 - 2² = 230439914977 is a prime.

It is a super-2 number, since 2×230439914981² (a number of 24 digits) contains 22 as substring.

Together with 230439914983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230439914983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115219957490 + 115219957491.

It is an arithmetic number, because the mean of its divisors is an integer number (115219957491).

Almost surely, 2^230439914981 is an apocalyptic number.

It is an amenable number.

230439914981 is a deficient number, since it is larger than the sum of its proper divisors (1).

230439914981 is an equidigital number, since it uses as much as digits as its factorization.

230439914981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 230439914981 in words is "two hundred thirty billion, four hundred thirty-nine million, nine hundred fourteen thousand, nine hundred eighty-one".