20054431 has 2 divisors, whose sum is σ = 20054432. Its totient is φ = 20054430.

The previous prime is 20054417. The next prime is 20054467. The reversal of 20054431 is 13445002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20054431 - 2¹⁵ = 20021663 is a prime.

It is a super-2 number, since 2×20054431² = 804360405467522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20054399 and 20054408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20054401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027215 + 10027216.

It is an arithmetic number, because the mean of its divisors is an integer number (10027216).

Almost surely, 2^20054431 is an apocalyptic number.

20054431 is the 2586-th hex number.

20054431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20054431 is an equidigital number, since it uses as much as digits as its factorization.

20054431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20054431 is about 4478.2173908822. The cubic root of 20054431 is about 271.6877860472.

Adding to 20054431 its reverse (13445002), we get a palindrome (33499433).

The spelling of 20054431 in words is "twenty million, fifty-four thousand, four hundred thirty-one".