231342111444 has 48 divisors (see below), whose sum is σ = 541198909440. Its totient is φ = 76914092640.

The previous prime is 231342111439. The next prime is 231342111461. The reversal of 231342111444 is 444111243132.

It is a happy number.

It is a super-3 number, since 3×231342111444³ (a number of 35 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 15054637 + ... + 15069995.

It is an arithmetic number, because the mean of its divisors is an integer number (11274977280).

Almost surely, 2^231342111444 is an apocalyptic number.

It is an amenable number.

231342111444 is an abundant number, since it is smaller than the sum of its proper divisors (309856797996).

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

231342111444 is a wasteful number, since it uses less digits than its factorization.

231342111444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18540 (or 18538 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

Adding to 231342111444 its reverse (444111243132), we get a palindrome (675453354576).

The spelling of 231342111444 in words is "two hundred thirty-one billion, three hundred forty-two million, one hundred eleven thousand, four hundred forty-four".