123540325231 has 2 divisors, whose sum is σ = 123540325232. Its totient is φ = 123540325230.

The previous prime is 123540325187. The next prime is 123540325261. The reversal of 123540325231 is 132523045321.

It is a strong prime.

It is an emirp because it is prime and its reverse (132523045321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123540325231 - 2¹⁷ = 123540194159 is a prime.

It is a super-2 number, since 2×123540325231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123540325193 and 123540325202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123540325261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61770162615 + 61770162616.

It is an arithmetic number, because the mean of its divisors is an integer number (61770162616).

Almost surely, 2^123540325231 is an apocalyptic number.

123540325231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123540325231 is an equidigital number, since it uses as much as digits as its factorization.

123540325231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 123540325231 in words is "one hundred twenty-three billion, five hundred forty million, three hundred twenty-five thousand, two hundred thirty-one".