23020011 has 32 divisors (see below), whose sum is σ = 40243200. Its totient is φ = 12726720.

The previous prime is 23020009. The next prime is 23020013. The reversal of 23020011 is 11002032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23020009) and next prime (23020013).

It is not a de Polignac number, because 23020011 - 2¹ = 23020009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 23019975 and 23020002.

It is not an unprimeable number, because it can be changed into a prime (23020013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3895 + ... + 7823.

It is an arithmetic number, because the mean of its divisors is an integer number (1257600).

Almost surely, 2^23020011 is an apocalyptic number.

23020011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23020011 is a deficient number, since it is larger than the sum of its proper divisors (17223189).

23020011 is a wasteful number, since it uses less digits than its factorization.

23020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 3970 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 23020011 is about 4797.9173606889. The cubic root of 23020011 is about 284.4691503414.

Adding to 23020011 its reverse (11002032), we get a palindrome (34022043).

The spelling of 23020011 in words is "twenty-three million, twenty thousand, eleven".