231240005120423 has 12 divisors (see below), whose sum is σ = 250401938780880. Its totient is φ = 213447234401856.

The previous prime is 231240005120419. The next prime is 231240005120483. The reversal of 231240005120423 is 324021500042132.

It is not a de Polignac number, because 231240005120423 - 2² = 231240005120419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231240005120413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9141611 + ... + 23367692.

It is an arithmetic number, because the mean of its divisors is an integer number (20866828231740).

Almost surely, 2^{231240005120423} is an apocalyptic number.

231240005120423 is a deficient number, since it is larger than the sum of its proper divisors (19161933660457).

231240005120423 is a wasteful number, since it uses less digits than its factorization.

231240005120423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32551418 (or 32551405 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 231240005120423 its reverse (324021500042132), we get a palindrome (555261505162555).

The spelling of 231240005120423 in words is "two hundred thirty-one trillion, two hundred forty billion, five million, one hundred twenty thousand, four hundred twenty-three".