123243431035202 has 32 divisors (see below), whose sum is σ = 200529420127344. Its totient is φ = 56577914726400.

The previous prime is 123243431035171. The next prime is 123243431035229. The reversal of 123243431035202 is 202530134342321.

It can be written as a sum of positive squares in 8 ways, for example, as 68780964578041 + 54462466457161 = 8293429^2 + 7379869^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14358068 + ... + 21275360.

Almost surely, 2^{123243431035202} is an apocalyptic number.

123243431035202 is a deficient number, since it is larger than the sum of its proper divisors (77285989092142).

123243431035202 is a wasteful number, since it uses less digits than its factorization.

123243431035202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930134.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 123243431035202 its reverse (202530134342321), we get a palindrome (325773565377523).

The spelling of 123243431035202 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred thirty-one million, thirty-five thousand, two hundred two".