231421332140024 has 64 divisors (see below), whose sum is σ = 471309092100000. Its totient is φ = 105893453352960.

The previous prime is 231421332140017. The next prime is 231421332140083. The reversal of 231421332140024 is 420041233124132.

It is a happy number.

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, 6195152 + ... + 22388000.

Almost surely, 2^{231421332140024} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231421332140024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235654546050000).

231421332140024 is an abundant number, since it is smaller than the sum of its proper divisors (239887759959976).

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

231421332140024 is a wasteful number, since it uses less digits than its factorization.

231421332140024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16194048 (or 16194044 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 231421332140024 its reverse (420041233124132), we get a palindrome (651462565264156).

The spelling of 231421332140024 in words is "two hundred thirty-one trillion, four hundred twenty-one billion, three hundred thirty-two million, one hundred forty thousand, twenty-four".