20230431 has 8 divisors (see below), whose sum is σ = 29048880. Its totient is φ = 12449472.

The previous prime is 20230411. The next prime is 20230433. The reversal of 20230431 is 13403202.

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

It is not a de Polignac number, because 20230431 - 2⁷ = 20230303 is a prime.

It is a super-2 number, since 2×20230431² = 818540676891522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20230431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259326 + ... + 259403.

It is an arithmetic number, because the mean of its divisors is an integer number (3631110).

Almost surely, 2^20230431 is an apocalyptic number.

20230431 is a deficient number, since it is larger than the sum of its proper divisors (8818449).

20230431 is a wasteful number, since it uses less digits than its factorization.

20230431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518745.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20230431 is about 4497.8251411099. The cubic root of 20230431 is about 272.4802600520.

Adding to 20230431 its reverse (13403202), we get a palindrome (33633633).

The spelling of 20230431 in words is "twenty million, two hundred thirty thousand, four hundred thirty-one".