20431242199 has 8 divisors (see below), whose sum is σ = 21092549120. Its totient is φ = 19770075000.

The previous prime is 20431242163. The next prime is 20431242233. The reversal of 20431242199 is 99124213402.

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 20431242199 - 2⁷ = 20431242071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431242119) 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, 319492 + ... + 378070.

It is an arithmetic number, because the mean of its divisors is an integer number (2636568640).

Almost surely, 2^20431242199 is an apocalyptic number.

20431242199 is a deficient number, since it is larger than the sum of its proper divisors (661306921).

20431242199 is a wasteful number, since it uses less digits than its factorization.

20431242199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69861.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 20431242199 in words is "twenty billion, four hundred thirty-one million, two hundred forty-two thousand, one hundred ninety-nine".