123768731 has 2 divisors, whose sum is σ = 123768732. Its totient is φ = 123768730.

The previous prime is 123768707. The next prime is 123768761. The reversal of 123768731 is 137867321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123768731 - 2¹⁸ = 123506587 is a prime.

It is a super-2 number, since 2×123768731² = 30637397546700722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123768761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61884365 + 61884366.

It is an arithmetic number, because the mean of its divisors is an integer number (61884366).

Almost surely, 2^123768731 is an apocalyptic number.

123768731 is a deficient number, since it is larger than the sum of its proper divisors (1).

123768731 is an equidigital number, since it uses as much as digits as its factorization.

123768731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 123768731 is about 11125.1395946298. The cubic root of 123768731 is about 498.3528880022.

The spelling of 123768731 in words is "one hundred twenty-three million, seven hundred sixty-eight thousand, seven hundred thirty-one".