123700651 has 2 divisors, whose sum is σ = 123700652. Its totient is φ = 123700650.

The previous prime is 123700597. The next prime is 123700679. The reversal of 123700651 is 156007321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123700651 - 2⁷ = 123700523 is a prime.

It is not a weakly prime, because it can be changed into another prime (123700151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61850325 + 61850326.

It is an arithmetic number, because the mean of its divisors is an integer number (61850326).

Almost surely, 2^123700651 is an apocalyptic number.

123700651 is a deficient number, since it is larger than the sum of its proper divisors (1).

123700651 is an equidigital number, since it uses as much as digits as its factorization.

123700651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 123700651 is about 11122.0794368679. The cubic root of 123700651 is about 498.2614968864.

Adding to 123700651 its reverse (156007321), we get a palindrome (279707972).

The spelling of 123700651 in words is "one hundred twenty-three million, seven hundred thousand, six hundred fifty-one".