123531045739 has 2 divisors, whose sum is σ = 123531045740. Its totient is φ = 123531045738.

The previous prime is 123531045709. The next prime is 123531045767. The reversal of 123531045739 is 937540135321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123531045739 - 2²⁹ = 122994174827 is a prime.

It is a super-2 number, since 2×123531045739² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123531045695 and 123531045704.

It is not a weakly prime, because it can be changed into another prime (123531045709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61765522869 + 61765522870.

It is an arithmetic number, because the mean of its divisors is an integer number (61765522870).

Almost surely, 2^123531045739 is an apocalyptic number.

123531045739 is a deficient number, since it is larger than the sum of its proper divisors (1).

123531045739 is an equidigital number, since it uses as much as digits as its factorization.

123531045739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 123531045739 in words is "one hundred twenty-three billion, five hundred thirty-one million, forty-five thousand, seven hundred thirty-nine".