123243431035204 has 12 divisors (see below), whose sum is σ = 221505085509484. Its totient is φ = 59956263746784.

The previous prime is 123243431035171. The next prime is 123243431035229. The reversal of 123243431035204 is 402530134342321.

It can be written as a sum of positive squares in 2 ways, for example, as 104094475128900 + 19148955906304 = 10202670^2 + 4375952^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416362942539 + ... + 416362942834.

Almost surely, 2^{123243431035204} is an apocalyptic number.

It is an amenable number.

123243431035204 is a deficient number, since it is larger than the sum of its proper divisors (98261654474280).

123243431035204 is a wasteful number, since it uses less digits than its factorization.

123243431035204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832725885414 (or 832725885412 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 123243431035204 its reverse (402530134342321), we get a palindrome (525773565377525).

The spelling of 123243431035204 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred thirty-one million, thirty-five thousand, two hundred four".