234431564623 has 2 divisors, whose sum is σ = 234431564624. Its totient is φ = 234431564622.

The previous prime is 234431564617. The next prime is 234431564671. The reversal of 234431564623 is 326465134432.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234431564623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 234431564623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234431565623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117215782311 + 117215782312.

It is an arithmetic number, because the mean of its divisors is an integer number (117215782312).

Almost surely, 2^234431564623 is an apocalyptic number.

234431564623 is a deficient number, since it is larger than the sum of its proper divisors (1).

234431564623 is an equidigital number, since it uses as much as digits as its factorization.

234431564623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 43.

The spelling of 234431564623 in words is "two hundred thirty-four billion, four hundred thirty-one million, five hundred sixty-four thousand, six hundred twenty-three".