123252203291 has 4 divisors (see below), whose sum is σ = 140859660912. Its totient is φ = 105644745672.

The previous prime is 123252203267. The next prime is 123252203351. The reversal of 123252203291 is 192302252321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192302252321 = 29 ⋅6631112149.

It is a cyclic number.

It is not a de Polignac number, because 123252203291 - 2¹⁰ = 123252202267 is a prime.

It is a super-2 number, since 2×123252203291² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123252203891) 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, 8803728800 + ... + 8803728813.

It is an arithmetic number, because the mean of its divisors is an integer number (35214915228).

Almost surely, 2^123252203291 is an apocalyptic number.

123252203291 is a deficient number, since it is larger than the sum of its proper divisors (17607457621).

123252203291 is an equidigital number, since it uses as much as digits as its factorization.

123252203291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17607457620.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 123252203291 in words is "one hundred twenty-three billion, two hundred fifty-two million, two hundred three thousand, two hundred ninety-one".