123231120202258 has 4 divisors (see below), whose sum is σ = 184846680303390. Its totient is φ = 61615560101128.

The previous prime is 123231120202171. The next prime is 123231120202259. The reversal of 123231120202258 is 852202021132321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 95571798822889 + 27659321379369 = 9776083^2 + 5259213^2 .

It is not an unprimeable number, because it can be changed into a prime (123231120202259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30807780050563 + ... + 30807780050566.

Almost surely, 2^{123231120202258} is an apocalyptic number.

123231120202258 is a deficient number, since it is larger than the sum of its proper divisors (61615560101132).

123231120202258 is an equidigital number, since it uses as much as digits as its factorization.

123231120202258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61615560101131.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 123231120202258 its reverse (852202021132321), we get a palindrome (975433141334579).

The spelling of 123231120202258 in words is "one hundred twenty-three trillion, two hundred thirty-one billion, one hundred twenty million, two hundred two thousand, two hundred fifty-eight".