2431671257 has 4 divisors (see below), whose sum is σ = 2515522020. Its totient is φ = 2347820496.

The previous prime is 2431671227. The next prime is 2431671259. The reversal of 2431671257 is 7521761342.

2431671257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 915425536 + 1516245721 = 30256^2 + 38939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431671257 - 2²⁸ = 2163235801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2431671257.

It is not an unprimeable number, because it can be changed into a prime (2431671259) 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, 41925338 + ... + 41925395.

It is an arithmetic number, because the mean of its divisors is an integer number (628880505).

Almost surely, 2^2431671257 is an apocalyptic number.

It is an amenable number.

2431671257 is a deficient number, since it is larger than the sum of its proper divisors (83850763).

2431671257 is an equidigital number, since it uses as much as digits as its factorization.

2431671257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83850762.

The product of its digits is 70560, while the sum is 38.

The square root of 2431671257 is about 49311.9788388177. The cubic root of 2431671257 is about 1344.7295664650.

The spelling of 2431671257 in words is "two billion, four hundred thirty-one million, six hundred seventy-one thousand, two hundred fifty-seven".