123497651 has 2 divisors, whose sum is σ = 123497652. Its totient is φ = 123497650.

The previous prime is 123497641. The next prime is 123497653. The reversal of 123497651 is 156794321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123497651 - 2¹⁰ = 123496627 is a prime.

It is a Sophie Germain prime.

Together with 123497653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123497653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61748825 + 61748826.

It is an arithmetic number, because the mean of its divisors is an integer number (61748826).

Almost surely, 2^123497651 is an apocalyptic number.

123497651 is a deficient number, since it is larger than the sum of its proper divisors (1).

123497651 is an equidigital number, since it uses as much as digits as its factorization.

123497651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 123497651 is about 11112.9496984374. The cubic root of 123497651 is about 497.9887889069.

The spelling of 123497651 in words is "one hundred twenty-three million, four hundred ninety-seven thousand, six hundred fifty-one".