20084431 has 2 divisors, whose sum is σ = 20084432. Its totient is φ = 20084430.

The previous prime is 20084419. The next prime is 20084437. The reversal of 20084431 is 13448002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20084431 - 2⁵ = 20084399 is a prime.

It is a super-2 number, since 2×20084431² = 806768737187522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20084437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042215 + 10042216.

It is an arithmetic number, because the mean of its divisors is an integer number (10042216).

Almost surely, 2^20084431 is an apocalyptic number.

20084431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20084431 is an equidigital number, since it uses as much as digits as its factorization.

20084431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20084431 is about 4481.5656862307. The cubic root of 20084431 is about 271.8231937401.

The spelling of 20084431 in words is "twenty million, eighty-four thousand, four hundred thirty-one".