23311021001 has 4 divisors (see below), whose sum is σ = 23312080404. Its totient is φ = 23309961600.

The previous prime is 23311020983. The next prime is 23311021003. The reversal of 23311021001 is 10012011332.

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 10201000000 + 13110021001 = 101000^2 + 114499^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311021001 - 2⁶ = 23311020937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23311021003) 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, 495980 + ... + 540941.

It is an arithmetic number, because the mean of its divisors is an integer number (5828020101).

Almost surely, 2^23311021001 is an apocalyptic number.

It is an amenable number.

23311021001 is a deficient number, since it is larger than the sum of its proper divisors (1059403).

23311021001 is a wasteful number, since it uses less digits than its factorization.

23311021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059402.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 23311021001 its reverse (10012011332), we get a palindrome (33323032333).

The spelling of 23311021001 in words is "twenty-three billion, three hundred eleven million, twenty-one thousand, one".