231001231122 has 48 divisors (see below), whose sum is σ = 513126158688. Its totient is φ = 75065215680.

The previous prime is 231001231103. The next prime is 231001231133. The reversal of 231001231122 is 221132100132.

231001231122 is a `hidden beast` number, since 2 + 310 + 0 + 1 + 231 + 122 = 666.

It is a super-2 number, since 2×231001231122² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231001231095 and 231001231104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116833 + ... + 689675.

It is an arithmetic number, because the mean of its divisors is an integer number (10690128306).

Almost surely, 2^231001231122 is an apocalyptic number.

231001231122 is an abundant number, since it is smaller than the sum of its proper divisors (282124927566).

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

231001231122 is a wasteful number, since it uses less digits than its factorization.

231001231122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573415 (or 573412 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231001231122 its reverse (221132100132), we get a palindrome (452133331254).

The spelling of 231001231122 in words is "two hundred thirty-one billion, one million, two hundred thirty-one thousand, one hundred twenty-two".