11420431 has 16 divisors (see below), whose sum is σ = 13022208. Its totient is φ = 9921600.

The previous prime is 11420429. The next prime is 11420441. The reversal of 11420431 is 13402411.

11420431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11420431 - 2¹ = 11420429 is a prime.

It is a super-2 number, since 2×11420431² = 260852488451522, 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 (11420401) 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, 36331 + ... + 36643.

It is an arithmetic number, because the mean of its divisors is an integer number (813888).

Almost surely, 2^11420431 is an apocalyptic number.

11420431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11420431 is a deficient number, since it is larger than the sum of its proper divisors (1601777).

11420431 is a wasteful number, since it uses less digits than its factorization.

11420431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 11420431 is about 3379.4128188193. The cubic root of 11420431 is about 225.1960825666.

Adding to 11420431 its reverse (13402411), we get a palindrome (24822842).

The spelling of 11420431 in words is "eleven million, four hundred twenty thousand, four hundred thirty-one".