123497653 has 2 divisors, whose sum is σ = 123497654. Its totient is φ = 123497652.

The previous prime is 123497651. The next prime is 123497659. The reversal of 123497653 is 356794321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90973444 + 32524209 = 9538^2 + 5703^2 .

It is a cyclic number.

It is not a de Polignac number, because 123497653 - 2¹ = 123497651 is a prime.

Together with 123497651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123497651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61748826 + 61748827.

It is an arithmetic number, because the mean of its divisors is an integer number (61748827).

Almost surely, 2^123497653 is an apocalyptic number.

It is an amenable number.

123497653 is a deficient number, since it is larger than the sum of its proper divisors (1).

123497653 is an equidigital number, since it uses as much as digits as its factorization.

123497653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 40.

The square root of 123497653 is about 11112.9497884225. The cubic root of 123497653 is about 497.9887915952.

It can be divided in two parts, 12349 and 7653, that added together give a palindrome (20002).

The spelling of 123497653 in words is "one hundred twenty-three million, four hundred ninety-seven thousand, six hundred fifty-three".