2431929 has 4 divisors (see below), whose sum is σ = 3242576. Its totient is φ = 1621284.

The previous prime is 2431927. The next prime is 2431937. The reversal of 2431929 is 9291342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2431929 - 2¹ = 2431927 is a prime.

It is a super-2 number, since 2×2431929² = 11828557322082, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2431896 and 2431905.

It is not an unprimeable number, because it can be changed into a prime (2431927) 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, 405319 + ... + 405324.

It is an arithmetic number, because the mean of its divisors is an integer number (810644).

2^2431929 is an apocalyptic number.

It is an amenable number.

2431929 is a deficient number, since it is larger than the sum of its proper divisors (810647).

2431929 is an equidigital number, since it uses as much as digits as its factorization.

2431929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810646.

The product of its digits is 3888, while the sum is 30.

The square root of 2431929 is about 1559.4643311086. The cubic root of 2431929 is about 134.4777075956.

The spelling of 2431929 in words is "two million, four hundred thirty-one thousand, nine hundred twenty-nine".