231111202422 has 16 divisors (see below), whose sum is σ = 472056924672. Its totient is φ = 75397980840.

The previous prime is 231111202411. The next prime is 231111202429. The reversal of 231111202422 is 224202111132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231111202429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409771354 + ... + 409771917.

It is an arithmetic number, because the mean of its divisors is an integer number (29503557792).

Almost surely, 2^231111202422 is an apocalyptic number.

231111202422 is an abundant number, since it is smaller than the sum of its proper divisors (240945722250).

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

231111202422 is a wasteful number, since it uses less digits than its factorization.

231111202422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819543323.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 231111202422 its reverse (224202111132), we get a palindrome (455313313554).

The spelling of 231111202422 in words is "two hundred thirty-one billion, one hundred eleven million, two hundred two thousand, four hundred twenty-two".