123754349731 has 2 divisors, whose sum is σ = 123754349732. Its totient is φ = 123754349730.

The previous prime is 123754349651. The next prime is 123754349777. The reversal of 123754349731 is 137943457321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123754349731 - 2¹¹ = 123754347683 is a prime.

It is a super-2 number, since 2×123754349731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123754349231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61877174865 + 61877174866.

It is an arithmetic number, because the mean of its divisors is an integer number (61877174866).

Almost surely, 2^123754349731 is an apocalyptic number.

123754349731 is a deficient number, since it is larger than the sum of its proper divisors (1).

123754349731 is an equidigital number, since it uses as much as digits as its factorization.

123754349731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 49.

The spelling of 123754349731 in words is "one hundred twenty-three billion, seven hundred fifty-four million, three hundred forty-nine thousand, seven hundred thirty-one".