231436441680 has 80 divisors (see below), whose sum is σ = 717526486080. Its totient is φ = 61710060544.

The previous prime is 231436441679. The next prime is 231436441681. The reversal of 231436441680 is 86144634132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231436441679) and next prime (231436441681).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231436441681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2591044 + ... + 2678876.

It is an arithmetic number, because the mean of its divisors is an integer number (8969081076).

Almost surely, 2^231436441680 is an apocalyptic number.

231436441680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231436441680 is an abundant number, since it is smaller than the sum of its proper divisors (486090044400).

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

231436441680 is a wasteful number, since it uses less digits than its factorization.

231436441680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98828 (or 98822 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 231436441680 in words is "two hundred thirty-one billion, four hundred thirty-six million, four hundred forty-one thousand, six hundred eighty".