231173575464 has 128 divisors (see below), whose sum is σ = 652813539840. Its totient is φ = 67735222272.

The previous prime is 231173575463. The next prime is 231173575499. The reversal of 231173575464 is 464575371132.

It is not an unprimeable number, because it can be changed into a prime (231173575463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329532 + ... + 755604.

It is an arithmetic number, because the mean of its divisors is an integer number (5100105780).

Almost surely, 2^231173575464 is an apocalyptic number.

231173575464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231173575464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326406769920).

231173575464 is an abundant number, since it is smaller than the sum of its proper divisors (421639964376).

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

231173575464 is a wasteful number, since it uses less digits than its factorization.

231173575464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426179 (or 426175 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 48.

The spelling of 231173575464 in words is "two hundred thirty-one billion, one hundred seventy-three million, five hundred seventy-five thousand, four hundred sixty-four".