23031020 has 24 divisors (see below), whose sum is σ = 49673904. Its totient is φ = 8963136.

The previous prime is 23030999. The next prime is 23031061. The reversal of 23031020 is 2013032.

It is a junction number, because it is equal to n+sod(n) for n = 23030992 and 23031010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14822 + ... + 16301.

It is an arithmetic number, because the mean of its divisors is an integer number (2069746).

Almost surely, 2^23031020 is an apocalyptic number.

23031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23031020 is an abundant number, since it is smaller than the sum of its proper divisors (26642884).

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

23031020 is a wasteful number, since it uses less digits than its factorization.

23031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31169 (or 31167 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 23031020 is about 4799.0644921693. The cubic root of 23031020 is about 284.5144909188.

Adding to 23031020 its reverse (2013032), we get a palindrome (25044052).

The spelling of 23031020 in words is "twenty-three million, thirty-one thousand, twenty".