2398431 has 16 divisors (see below), whose sum is σ = 3680768. Its totient is φ = 1360800.

The previous prime is 2398423. The next prime is 2398433. The reversal of 2398431 is 1348932.

It is not a de Polignac number, because 2398431 - 2³ = 2398423 is a prime.

It is a super-2 number, since 2×2398431² = 11504942523522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3486 + ... + 4116.

It is an arithmetic number, because the mean of its divisors is an integer number (230048).

2^2398431 is an apocalyptic number.

2398431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2398431 is a deficient number, since it is larger than the sum of its proper divisors (1282337).

2398431 is a wasteful number, since it uses less digits than its factorization.

2398431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

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

The square root of 2398431 is about 1548.6868631198. The cubic root of 2398431 is about 133.8574075368.

The spelling of 2398431 in words is "two million, three hundred ninety-eight thousand, four hundred thirty-one".