231111213420120 has 128 divisors (see below), whose sum is σ = 756374515626240. Its totient is φ = 56026179760640.

The previous prime is 231111213420091. The next prime is 231111213420173. The reversal of 231111213420120 is 21024312111132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96460927 + ... + 98827793.

It is an arithmetic number, because the mean of its divisors is an integer number (5909175903330).

Almost surely, 2^{231111213420120} is an apocalyptic number.

231111213420120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231111213420120 is an abundant number, since it is smaller than the sum of its proper divisors (525263302206120).

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

231111213420120 is a wasteful number, since it uses less digits than its factorization.

231111213420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440865 (or 2440861 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 231111213420120 its reverse (21024312111132), we get a palindrome (252135525531252).

The spelling of 231111213420120 in words is "two hundred thirty-one trillion, one hundred eleven billion, two hundred thirteen million, four hundred twenty thousand, one hundred twenty".