20022303231 has 24 divisors (see below), whose sum is σ = 34996968864. Its totient is φ = 10768296960.

The previous prime is 20022303193. The next prime is 20022303251. The reversal of 20022303231 is 13230322002.

It is a happy number.

20022303231 is a `hidden beast` number, since 200 + 2 + 230 + 3 + 231 = 666.

It is not a de Polignac number, because 20022303231 - 2⁶ = 20022303167 is a prime.

It is a super-2 number, since 2×20022303231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022303251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9346410 + ... + 9348551.

It is an arithmetic number, because the mean of its divisors is an integer number (1458207036).

Almost surely, 2^20022303231 is an apocalyptic number.

20022303231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20022303231 is a deficient number, since it is larger than the sum of its proper divisors (14974665633).

20022303231 is a wasteful number, since it uses less digits than its factorization.

20022303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18694991 (or 18694988 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20022303231 its reverse (13230322002), we get a palindrome (33252625233).

The spelling of 20022303231 in words is "twenty billion, twenty-two million, three hundred three thousand, two hundred thirty-one".