231240245200 has 60 divisors (see below), whose sum is σ = 555676904268. Its totient is φ = 92475750400.

The previous prime is 231240245191. The next prime is 231240245207. The reversal of 231240245200 is 2542042132.

It can be written as a sum of positive squares in 6 ways, for example, as 3955403664 + 227284841536 = 62892^2 + 476744^2 .

It is a super-2 number, since 2×231240245200² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231240245207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1827174 + ... + 1949626.

Almost surely, 2^231240245200 is an apocalyptic number.

231240245200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231240245200 is an abundant number, since it is smaller than the sum of its proper divisors (324436659068).

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

231240245200 is a wasteful number, since it uses less digits than its factorization.

231240245200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127192 (or 127181 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 231240245200 its reverse (2542042132), we get a palindrome (233782287332).

The spelling of 231240245200 in words is "two hundred thirty-one billion, two hundred forty million, two hundred forty-five thousand, two hundred".