2431897643 has 4 divisors (see below), whose sum is σ = 2779311600. Its totient is φ = 2084483688.

The previous prime is 2431897619. The next prime is 2431897649. The reversal of 2431897643 is 3467981342.

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

It is not a de Polignac number, because 2431897643 - 2¹⁴ = 2431881259 is a prime.

It is a super-2 number, since 2×2431897643² = 11828252292057910898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2431897649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173706968 + ... + 173706981.

It is an arithmetic number, because the mean of its divisors is an integer number (694827900).

Almost surely, 2^2431897643 is an apocalyptic number.

2431897643 is a deficient number, since it is larger than the sum of its proper divisors (347413957).

2431897643 is an equidigital number, since it uses as much as digits as its factorization.

2431897643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347413956.

The product of its digits is 870912, while the sum is 47.

The square root of 2431897643 is about 49314.2742317070. The cubic root of 2431897643 is about 1344.7712961327.

The spelling of 2431897643 in words is "two billion, four hundred thirty-one million, eight hundred ninety-seven thousand, six hundred forty-three".