2291431364420 has 96 divisors (see below), whose sum is σ = 5560597195776. Its totient is φ = 783902412800.

The previous prime is 2291431364407. The next prime is 2291431364449. The reversal of 2291431364420 is 244631341922.

2291431364420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8821805 + ... + 9077835.

It is an arithmetic number, because the mean of its divisors is an integer number (57922887456).

Almost surely, 2^{2291431364420} is an apocalyptic number.

2291431364420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291431364420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2780298597888).

2291431364420 is an abundant number, since it is smaller than the sum of its proper divisors (3269165831356).

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

2291431364420 is a wasteful number, since it uses less digits than its factorization.

2291431364420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258461 (or 258459 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 2291431364420 in words is "two trillion, two hundred ninety-one billion, four hundred thirty-one million, three hundred sixty-four thousand, four hundred twenty".