20452422331 has 16 divisors (see below), whose sum is σ = 22694918400. Its totient is φ = 18276444000.

The previous prime is 20452422311. The next prime is 20452422349. The reversal of 20452422331 is 13322425402.

It is a cyclic number.

It is not a de Polignac number, because 20452422331 - 2⁹ = 20452421819 is a prime.

It is a super-2 number, since 2×20452422331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20452422331.

It is not an unprimeable number, because it can be changed into a prime (20452422311) 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, 88210 + ... + 220648.

It is an arithmetic number, because the mean of its divisors is an integer number (1418432400).

Almost surely, 2^20452422331 is an apocalyptic number.

20452422331 is a deficient number, since it is larger than the sum of its proper divisors (2242496069).

20452422331 is a wasteful number, since it uses less digits than its factorization.

20452422331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132690.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20452422331 its reverse (13322425402), we get a palindrome (33774847733).

The spelling of 20452422331 in words is "twenty billion, four hundred fifty-two million, four hundred twenty-two thousand, three hundred thirty-one".