231551425022050 has 24 divisors (see below), whose sum is σ = 492212172047616. Its totient is φ = 79389060007440.

The previous prime is 231551425022033. The next prime is 231551425022069. The reversal of 231551425022050 is 50220524155132.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330787749682 + ... + 330787750381.

It is an arithmetic number, because the mean of its divisors is an integer number (20508840501984).

Almost surely, 2^{231551425022050} is an apocalyptic number.

231551425022050 is an abundant number, since it is smaller than the sum of its proper divisors (260660747025566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231551425022050 is a wasteful number, since it uses less digits than its factorization.

231551425022050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661575500082 (or 661575500077 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 231551425022050 its reverse (50220524155132), we get a palindrome (281771949177182).

The spelling of 231551425022050 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, four hundred twenty-five million, twenty-two thousand, fifty".