231404171328 has 672 divisors, whose sum is σ = 812930048000. Its totient is φ = 64254643200.

The previous prime is 231404171293. The next prime is 231404171333. The reversal of 231404171328 is 823171404132.

231404171328 is a `hidden beast` number, since 2 + 314 + 0 + 4 + 17 + 1 + 328 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 231404171292 and 231404171301.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 123151893 + ... + 123153771.

Almost surely, 2^231404171328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231404171328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406465024000).

231404171328 is an abundant number, since it is smaller than the sum of its proper divisors (581525876672).

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

231404171328 is a wasteful number, since it uses less digits than its factorization.

231404171328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 231404171328 in words is "two hundred thirty-one billion, four hundred four million, one hundred seventy-one thousand, three hundred twenty-eight".