23011001 has 4 divisors (see below), whose sum is σ = 24781092. Its totient is φ = 21240912.

The previous prime is 23010997. The next prime is 23011031. The reversal of 23011001 is 10011032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10086976 + 12924025 = 3176^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 23011001 - 2² = 23010997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23011001.

It is not an unprimeable number, because it can be changed into a prime (23011031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885026 + ... + 885051.

It is an arithmetic number, because the mean of its divisors is an integer number (6195273).

Almost surely, 2^23011001 is an apocalyptic number.

It is an amenable number.

23011001 is a deficient number, since it is larger than the sum of its proper divisors (1770091).

23011001 is a wasteful number, since it uses less digits than its factorization.

23011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770090.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 23011001 is about 4796.9783197342. The cubic root of 23011001 is about 284.4320318895.

Adding to 23011001 its reverse (10011032), we get a palindrome (33022033).

The spelling of 23011001 in words is "twenty-three million, eleven thousand, one".