20323223031 has 16 divisors (see below), whose sum is σ = 27319638528. Its totient is φ = 13438092000.

The previous prime is 20323222987. The next prime is 20323223033. The reversal of 20323223031 is 13032232302.

It is not a de Polignac number, because 20323223031 - 2⁷ = 20323222903 is a prime.

It is a super-2 number, since 2×20323223031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20323222989 and 20323223007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323223033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258421 + ... + 327761.

It is an arithmetic number, because the mean of its divisors is an integer number (1707477408).

Almost surely, 2^20323223031 is an apocalyptic number.

20323223031 is a deficient number, since it is larger than the sum of its proper divisors (6996415497).

20323223031 is a wasteful number, since it uses less digits than its factorization.

20323223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70142.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20323223031 its reverse (13032232302), we get a palindrome (33355455333).

The spelling of 20323223031 in words is "twenty billion, three hundred twenty-three million, two hundred twenty-three thousand, thirty-one".