231240222002 has 16 divisors (see below), whose sum is σ = 351866757912. Its totient is φ = 113953599360.

The previous prime is 231240221987. The next prime is 231240222061. The reversal of 231240222002 is 200222042132.

It can be written as a sum of positive squares in 4 ways, for example, as 167812303201 + 63427918801 = 409649^2 + 251849^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371813 + ... + 775064.

Almost surely, 2^231240222002 is an apocalyptic number.

231240222002 is a deficient number, since it is larger than the sum of its proper divisors (120626535910).

231240222002 is a wasteful number, since it uses less digits than its factorization.

231240222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148333.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 231240222002 its reverse (200222042132), we get a palindrome (431462264134).

The spelling of 231240222002 in words is "two hundred thirty-one billion, two hundred forty million, two hundred twenty-two thousand, two".