423014108981 has 2 divisors, whose sum is σ = 423014108982. Its totient is φ = 423014108980.

The previous prime is 423014108971. The next prime is 423014108983. The reversal of 423014108981 is 189801410324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414232544881 + 8781564100 = 643609^2 + 93710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423014108981 is a prime.

It is a super-2 number, since 2×423014108981² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 423014108983, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423014108983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211507054490 + 211507054491.

It is an arithmetic number, because the mean of its divisors is an integer number (211507054491).

Almost surely, 2^423014108981 is an apocalyptic number.

It is an amenable number.

423014108981 is a deficient number, since it is larger than the sum of its proper divisors (1).

423014108981 is an equidigital number, since it uses as much as digits as its factorization.

423014108981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 423014108981 in words is "four hundred twenty-three billion, fourteen million, one hundred eight thousand, nine hundred eighty-one".