1100431 has 4 divisors (see below), whose sum is σ = 1102864. Its totient is φ = 1098000.

The previous prime is 1100419. The next prime is 1100441. The reversal of 1100431 is 1340011.

It is a happy number.

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 1100431 - 2⁷ = 1100303 is a prime.

It is a super-2 number, since 2×1100431² = 2421896771522, which contains 22 as substring.

It is a Duffinian number.

1100431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100441) 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, 315 + ... + 1516.

It is an arithmetic number, because the mean of its divisors is an integer number (275716).

2^1100431 is an apocalyptic number.

1100431 is a deficient number, since it is larger than the sum of its proper divisors (2433).

1100431 is an equidigital number, since it uses as much as digits as its factorization.

1100431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1100431 is about 1049.0142992352. The cubic root of 1100431 is about 103.2414919891.

Adding to 1100431 its reverse (1340011), we get a palindrome (2440442).

The spelling of 1100431 in words is "one million, one hundred thousand, four hundred thirty-one".