231551505252434 has 4 divisors (see below), whose sum is σ = 347327257878654. Its totient is φ = 115775752626216.

The previous prime is 231551505252427. The next prime is 231551505252467. The reversal of 231551505252434 is 434252505155132.

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., 170904557864209 + 60646947388225 = 13073047^2 + 7787615^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57887876313107 + ... + 57887876313110.

Almost surely, 2^{231551505252434} is an apocalyptic number.

231551505252434 is a deficient number, since it is larger than the sum of its proper divisors (115775752626220).

231551505252434 is a wasteful number, since it uses less digits than its factorization.

231551505252434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115775752626219.

The product of its (nonzero) digits is 3600000, while the sum is 47.

The spelling of 231551505252434 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, five hundred five million, two hundred fifty-two thousand, four hundred thirty-four".