231113421040 has 40 divisors (see below), whose sum is σ = 568946866320. Its totient is φ = 87007405056.

The previous prime is 231113421017. The next prime is 231113421041. The reversal of 231113421040 is 40124311132.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231113421041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 84966810 + ... + 84969529.

It is an arithmetic number, because the mean of its divisors is an integer number (14223671658).

Almost surely, 2^231113421040 is an apocalyptic number.

231113421040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231113421040 is an abundant number, since it is smaller than the sum of its proper divisors (337833445280).

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

231113421040 is a wasteful number, since it uses less digits than its factorization.

231113421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169936369 (or 169936363 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 231113421040 its reverse (40124311132), we get a palindrome (271237732172).

The spelling of 231113421040 in words is "two hundred thirty-one billion, one hundred thirteen million, four hundred twenty-one thousand, forty".