123157653 has 4 divisors (see below), whose sum is σ = 164210208. Its totient is φ = 82105100.

The previous prime is 123157607. The next prime is 123157703. The reversal of 123157653 is 356751321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123157653 - 2¹⁰ = 123156629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123157453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20526273 + ... + 20526278.

It is an arithmetic number, because the mean of its divisors is an integer number (41052552).

Almost surely, 2^123157653 is an apocalyptic number.

It is an amenable number.

123157653 is a deficient number, since it is larger than the sum of its proper divisors (41052555).

123157653 is an equidigital number, since it uses as much as digits as its factorization.

123157653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41052554.

The product of its digits is 18900, while the sum is 33.

The square root of 123157653 is about 11097.6417765217. The cubic root of 123157653 is about 497.5313691153.

The spelling of 123157653 in words is "one hundred twenty-three million, one hundred fifty-seven thousand, six hundred fifty-three".