23020031320 has 128 divisors (see below), whose sum is σ = 61126410240. Its totient is φ = 7691927040.

The previous prime is 23020031317. The next prime is 23020031323. The reversal of 23020031320 is 2313002032.

It is an interprime number because it is at equal distance from previous prime (23020031317) and next prime (23020031323).

It is a junction number, because it is equal to n+sod(n) for n = 23020031294 and 23020031303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020031323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1266537 + ... + 1284583.

It is an arithmetic number, because the mean of its divisors is an integer number (477550080).

Almost surely, 2^23020031320 is an apocalyptic number.

23020031320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23020031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30563205120).

23020031320 is an abundant number, since it is smaller than the sum of its proper divisors (38106378920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23020031320 is a wasteful number, since it uses less digits than its factorization.

23020031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305 (or 18301 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 23020031320 its reverse (2313002032), we get a palindrome (25333033352).

The spelling of 23020031320 in words is "twenty-three billion, twenty million, thirty-one thousand, three hundred twenty".