231243205022 has 16 divisors (see below), whose sum is σ = 357522189552. Its totient is φ = 112108395840.

The previous prime is 231243205003. The next prime is 231243205069. The reversal of 231243205022 is 220502342132.

It is a junction number, because it is equal to n+sod(n) for n = 231243204982 and 231243205000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9801629 + ... + 9825192.

It is an arithmetic number, because the mean of its divisors is an integer number (22345136847).

Almost surely, 2^231243205022 is an apocalyptic number.

231243205022 is a deficient number, since it is larger than the sum of its proper divisors (126278984530).

231243205022 is a wasteful number, since it uses less digits than its factorization.

231243205022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627003.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 231243205022 its reverse (220502342132), we get a palindrome (451745547154).

The spelling of 231243205022 in words is "two hundred thirty-one billion, two hundred forty-three million, two hundred five thousand, twenty-two".