20450226231 has 12 divisors (see below), whose sum is σ = 29555443008. Its totient is φ = 13625994624.

The previous prime is 20450226197. The next prime is 20450226239. The reversal of 20450226231 is 13262205402.

It is a happy number.

20450226231 is a `hidden beast` number, since 204 + 5 + 0 + 226 + 231 = 666.

It is not a de Polignac number, because 20450226231 - 2¹⁰ = 20450225207 is a prime.

It is a super-2 number, since 2×20450226231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20450226195 and 20450226204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450226239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 606810 + ... + 639623.

It is an arithmetic number, because the mean of its divisors is an integer number (2462953584).

Almost surely, 2^20450226231 is an apocalyptic number.

20450226231 is a deficient number, since it is larger than the sum of its proper divisors (9105216777).

20450226231 is a wasteful number, since it uses less digits than its factorization.

20450226231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248262 (or 1248259 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 20450226231 in words is "twenty billion, four hundred fifty million, two hundred twenty-six thousand, two hundred thirty-one".