231240422002 has 4 divisors (see below), whose sum is σ = 346860633006. Its totient is φ = 115620211000.

The previous prime is 231240421999. The next prime is 231240422071. The reversal of 231240422002 is 200224042132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 200183761561 + 31056660441 = 447419^2 + 176229^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57810105499 + ... + 57810105502.

Almost surely, 2^231240422002 is an apocalyptic number.

231240422002 is a deficient number, since it is larger than the sum of its proper divisors (115620211004).

231240422002 is a wasteful number, since it uses less digits than its factorization.

231240422002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115620211003.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 231240422002 its reverse (200224042132), we get a palindrome (431464464134).

The spelling of 231240422002 in words is "two hundred thirty-one billion, two hundred forty million, four hundred twenty-two thousand, two".