20431167 has 16 divisors (see below), whose sum is σ = 28575840. Its totient is φ = 12966912.

The previous prime is 20431123. The next prime is 20431171. The reversal of 20431167 is 76113402.

It is not a de Polignac number, because 20431167 - 2⁷ = 20431039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431267) 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, 4743 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (1785990).

Almost surely, 2^20431167 is an apocalyptic number.

20431167 is a deficient number, since it is larger than the sum of its proper divisors (8144673).

20431167 is a wasteful number, since it uses less digits than its factorization.

20431167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20431167 is about 4520.0848443364. The cubic root of 20431167 is about 273.3785220086.

Adding to 20431167 its reverse (76113402), we get a palindrome (96544569).

The spelling of 20431167 in words is "twenty million, four hundred thirty-one thousand, one hundred sixty-seven".