2129260431 has 4 divisors (see below), whose sum is σ = 2839013912. Its totient is φ = 1419506952.

The previous prime is 2129260363. The next prime is 2129260459. The reversal of 2129260431 is 1340629212.

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

It is not a de Polignac number, because 2129260431 - 2⁹ = 2129259919 is a prime.

It is a super-2 number, since 2×2129260431² = 9067499966044611522, which 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 (2129268431) 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, 354876736 + ... + 354876741.

It is an arithmetic number, because the mean of its divisors is an integer number (709753478).

Almost surely, 2^2129260431 is an apocalyptic number.

2129260431 is a deficient number, since it is larger than the sum of its proper divisors (709753481).

2129260431 is an equidigital number, since it uses as much as digits as its factorization.

2129260431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709753480.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2129260431 is about 46143.9100098810. The cubic root of 2129260431 is about 1286.4994192381.

Adding to 2129260431 its reverse (1340629212), we get a palindrome (3469889643).

The spelling of 2129260431 in words is "two billion, one hundred twenty-nine million, two hundred sixty thousand, four hundred thirty-one".