123631361863 has 2 divisors, whose sum is σ = 123631361864. Its totient is φ = 123631361862.

The previous prime is 123631361729. The next prime is 123631361881. The reversal of 123631361863 is 368163136321.

It is a strong prime.

It is an emirp because it is prime and its reverse (368163136321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123631361863 - 2²¹ = 123629264711 is a prime.

It is a super-2 number, since 2×123631361863² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123631361263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61815680931 + 61815680932.

It is an arithmetic number, because the mean of its divisors is an integer number (61815680932).

Almost surely, 2^123631361863 is an apocalyptic number.

123631361863 is a deficient number, since it is larger than the sum of its proper divisors (1).

123631361863 is an equidigital number, since it uses as much as digits as its factorization.

123631361863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 43.

The spelling of 123631361863 in words is "one hundred twenty-three billion, six hundred thirty-one million, three hundred sixty-one thousand, eight hundred sixty-three".