231002664720 has 160 divisors (see below), whose sum is σ = 725623557120. Its totient is φ = 60787484160.

The previous prime is 231002664713. The next prime is 231002664727. The reversal of 231002664720 is 27466200132.

231002664720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231002664713) and next prime (231002664727).

It is a super-2 number, since 2×231002664720² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231002664727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5607237 + ... + 5648283.

It is an arithmetic number, because the mean of its divisors is an integer number (4535147232).

Almost surely, 2^231002664720 is an apocalyptic number.

231002664720 is a gapful number since it is divisible by the number (20) 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 231002664720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362811778560).

231002664720 is an abundant number, since it is smaller than the sum of its proper divisors (494620892400).

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

231002664720 is a wasteful number, since it uses less digits than its factorization.

231002664720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41373 (or 41367 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

Adding to 231002664720 its reverse (27466200132), we get a palindrome (258468864852).

The spelling of 231002664720 in words is "two hundred thirty-one billion, two million, six hundred sixty-four thousand, seven hundred twenty".