123731378711 has 2 divisors, whose sum is σ = 123731378712. Its totient is φ = 123731378710.

The previous prime is 123731378699. The next prime is 123731378747. The reversal of 123731378711 is 117873137321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123731378711 - 2¹⁸ = 123731116567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123731378761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61865689355 + 61865689356.

It is an arithmetic number, because the mean of its divisors is an integer number (61865689356).

Almost surely, 2^123731378711 is an apocalyptic number.

123731378711 is a deficient number, since it is larger than the sum of its proper divisors (1).

123731378711 is an equidigital number, since it uses as much as digits as its factorization.

123731378711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 44.

The spelling of 123731378711 in words is "one hundred twenty-three billion, seven hundred thirty-one million, three hundred seventy-eight thousand, seven hundred eleven".