20334431401 has 4 divisors (see below), whose sum is σ = 20718099972. Its totient is φ = 19950762832.

The previous prime is 20334431317. The next prime is 20334431407. The reversal of 20334431401 is 10413443302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18666117376 + 1668314025 = 136624^2 + 40845^2 .

It is a cyclic number.

It is not a de Polignac number, because 20334431401 - 2²¹ = 20332334249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20334431407) 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, 191834206 + ... + 191834311.

It is an arithmetic number, because the mean of its divisors is an integer number (5179524993).

Almost surely, 2^20334431401 is an apocalyptic number.

It is an amenable number.

20334431401 is a deficient number, since it is larger than the sum of its proper divisors (383668571).

20334431401 is an equidigital number, since it uses as much as digits as its factorization.

20334431401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383668570.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20334431401 its reverse (10413443302), we get a palindrome (30747874703).

The spelling of 20334431401 in words is "twenty billion, three hundred thirty-four million, four hundred thirty-one thousand, four hundred one".