231531454016 has 28 divisors (see below), whose sum is σ = 459468687360. Its totient is φ = 115759816320.

The previous prime is 231531454013. The next prime is 231531454043. The reversal of 231531454016 is 610454135132.

It is not an unprimeable number, because it can be changed into a prime (231531454013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1344125 + ... + 1506563.

Almost surely, 2^231531454016 is an apocalyptic number.

It is an amenable number.

231531454016 is a deficient number, since it is larger than the sum of its proper divisors (227937233344).

231531454016 is a wasteful number, since it uses less digits than its factorization.

231531454016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184722 (or 184712 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 231531454016 its reverse (610454135132), we get a palindrome (841985589148).

The spelling of 231531454016 in words is "two hundred thirty-one billion, five hundred thirty-one million, four hundred fifty-four thousand, sixteen".