231142404211122 has 32 divisors (see below), whose sum is σ = 491150681841600. Its totient is φ = 72380100477888.

The previous prime is 231142404211097. The next prime is 231142404211133. The reversal of 231142404211122 is 221112404241132.

It is a happy number.

It is a super-2 number, since 2×231142404211122² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231142404211122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17951407372 + ... + 17951420247.

It is an arithmetic number, because the mean of its divisors is an integer number (15348458807550).

Almost surely, 2^{231142404211122} is an apocalyptic number.

231142404211122 is an abundant number, since it is smaller than the sum of its proper divisors (260008277630478).

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

231142404211122 is a wasteful number, since it uses less digits than its factorization.

231142404211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35902827690.

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 231142404211122 its reverse (221112404241132), we get a palindrome (452254808452254).

The spelling of 231142404211122 in words is "two hundred thirty-one trillion, one hundred forty-two billion, four hundred four million, two hundred eleven thousand, one hundred twenty-two".