20204232023431 has 4 divisors (see below), whose sum is σ = 20210341561672. Its totient is φ = 20198122485192.

The previous prime is 20204232023401. The next prime is 20204232023461. The reversal of 20204232023431 is 13432023240202.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20204232023401) and next prime (20204232023461).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20204232023431 is a prime.

It is a super-2 number, since 2×20204232023431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20204232023431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204232023401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3054764160 + ... + 3054770773.

It is an arithmetic number, because the mean of its divisors is an integer number (5052585390418).

Almost surely, 2^{20204232023431} is an apocalyptic number.

20204232023431 is a deficient number, since it is larger than the sum of its proper divisors (6109538241).

20204232023431 is an equidigital number, since it uses as much as digits as its factorization.

20204232023431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6109538240.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20204232023431 its reverse (13432023240202), we get a palindrome (33636255263633).

The spelling of 20204232023431 in words is "twenty trillion, two hundred four billion, two hundred thirty-two million, twenty-three thousand, four hundred thirty-one".