20110431 has 8 divisors (see below), whose sum is σ = 29251584. Its totient is φ = 12188120.

The previous prime is 20110429. The next prime is 20110481. The reversal of 20110431 is 13401102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20110431 - 2¹ = 20110429 is a prime.

It is a super-2 number, since 2×20110431² = 808858870011522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304671 + ... + 304736.

It is an arithmetic number, because the mean of its divisors is an integer number (3656448).

Almost surely, 2^20110431 is an apocalyptic number.

20110431 is a deficient number, since it is larger than the sum of its proper divisors (9141153).

20110431 is a wasteful number, since it uses less digits than its factorization.

20110431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609421.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20110431 is about 4484.4655199923. The cubic root of 20110431 is about 271.9404380467.

Adding to 20110431 its reverse (13401102), we get a palindrome (33511533).

The spelling of 20110431 in words is "twenty million, one hundred ten thousand, four hundred thirty-one".