23321407 has 4 divisors (see below), whose sum is σ = 23438800.
Its totient is φ = 23204016.
The previous prime is 23321377. The next prime is 23321413. The reversal of 23321407 is 70412332.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-23321407 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23321477) 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 3 ways as a sum of consecutive naturals, for example, 58398 + ... + 58795.
It is an arithmetic number, because the mean of its divisors is an integer number (5859700).
Almost surely, 223321407 is an apocalyptic number.
23321407 is a deficient number, since it is larger than the sum of its proper divisors (117393).
23321407 is a wasteful number, since it uses less digits than its factorization.
23321407 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 117392.
The product of its (nonzero) digits is 1008, while the sum is 22.
The square root of 23321407 is about 4829.2242648276.
The cubic root of 23321407 is about 285.7052687750.
Adding to 23321407 its reverse (70412332), we get a palindrome (93733739).
The spelling of 23321407 in words is "twenty-three million, three hundred twenty-one thousand, four hundred seven".