2618431 has 4 divisors (see below), whose sum is σ = 2632192. Its totient is φ = 2604672.

The previous prime is 2618423. The next prime is 2618449. The reversal of 2618431 is 1348162.

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

It is a cyclic number.

It is not a de Polignac number, because 2618431 - 2³ = 2618423 is a prime.

It is a super-2 number, since 2×2618431² = 13712361803522, which contains 22 as substring.

It is a Duffinian number.

2618431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2618396 and 2618405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2618411) 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, 6591 + ... + 6976.

It is an arithmetic number, because the mean of its divisors is an integer number (658048).

2^2618431 is an apocalyptic number.

2618431 is a deficient number, since it is larger than the sum of its proper divisors (13761).

2618431 is a wasteful number, since it uses less digits than its factorization.

2618431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13760.

The product of its digits is 1152, while the sum is 25.

The square root of 2618431 is about 1618.1566673224. The cubic root of 2618431 is about 137.8310436652.

The spelling of 2618431 in words is "two million, six hundred eighteen thousand, four hundred thirty-one".