231000120200 has 24 divisors (see below), whose sum is σ = 537075279930. Its totient is φ = 92400048000.

The previous prime is 231000120199. The next prime is 231000120209. The reversal of 231000120200 is 2021000132.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 224746157476 + 6253962724 = 474074^2 + 79082^2 .

It is a super-2 number, since 2×231000120200² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231000120209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 577500101 + ... + 577500500.

Almost surely, 2^231000120200 is an apocalyptic number.

231000120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231000120200 is an abundant number, since it is smaller than the sum of its proper divisors (306075159730).

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

231000120200 is a wasteful number, since it uses less digits than its factorization.

231000120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155000617 (or 1155000608 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 231000120200 its reverse (2021000132), we get a palindrome (233021120332).

The spelling of 231000120200 in words is "two hundred thirty-one billion, one hundred twenty thousand, two hundred".