581119232431 has 4 divisors (see below), whose sum is σ = 582089382000. Its totient is φ = 580149082864.

The previous prime is 581119232423. The next prime is 581119232443. The reversal of 581119232431 is 134232911185.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 581119232431 - 2³ = 581119232423 is a prime.

It is a super-2 number, since 2×581119232431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581119232411) 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 3 ways as a sum of consecutive naturals, for example, 485073886 + ... + 485075083.

It is an arithmetic number, because the mean of its divisors is an integer number (145522345500).

Almost surely, 2^581119232431 is an apocalyptic number.

581119232431 is a deficient number, since it is larger than the sum of its proper divisors (970149569).

581119232431 is an equidigital number, since it uses as much as digits as its factorization.

581119232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970149568.

The product of its digits is 51840, while the sum is 40.

The spelling of 581119232431 in words is "five hundred eighty-one billion, one hundred nineteen million, two hundred thirty-two thousand, four hundred thirty-one".