231657325450 has 48 divisors (see below), whose sum is σ = 449367738624. Its totient is φ = 88749273600.

The previous prime is 231657325399. The next prime is 231657325457. The reversal of 231657325450 is 54523756132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231657325397 and 231657325406.

It is not an unprimeable number, because it can be changed into a prime (231657325457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620044 + ... + 920743.

It is an arithmetic number, because the mean of its divisors is an integer number (9361827888).

Almost surely, 2^231657325450 is an apocalyptic number.

231657325450 is a deficient number, since it is larger than the sum of its proper divisors (217710413174).

231657325450 is a wasteful number, since it uses less digits than its factorization.

231657325450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540927 (or 1540922 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 231657325450 in words is "two hundred thirty-one billion, six hundred fifty-seven million, three hundred twenty-five thousand, four hundred fifty".