231322001000 has 64 divisors (see below), whose sum is σ = 541364850000. Its totient is φ = 92516601600.

The previous prime is 231322000997. The next prime is 231322001047. The reversal of 231322001000 is 100223132.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 15229040836 + 216092960164 = 123406^2 + 464858^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14140826 + ... + 14157174.

Almost surely, 2^231322001000 is an apocalyptic number.

231322001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231322001000 is an abundant number, since it is smaller than the sum of its proper divisors (310042849000).

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

231322001000 is a wasteful number, since it uses less digits than its factorization.

231322001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30519 (or 30505 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 231322001000 its reverse (100223132), we get a palindrome (231422224132).

The spelling of 231322001000 in words is "two hundred thirty-one billion, three hundred twenty-two million, one thousand".