23421237 has 8 divisors (see below), whose sum is σ = 35689536. Its totient is φ = 13383552.

The previous prime is 23421221. The next prime is 23421253. The reversal of 23421237 is 73212432.

It is an interprime number because it is at equal distance from previous prime (23421221) and next prime (23421253).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23421237 - 2⁴ = 23421221 is a prime.

It is a super-2 number, since 2×23421237² = 1097108685220338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557628 + ... + 557669.

It is an arithmetic number, because the mean of its divisors is an integer number (4461192).

Almost surely, 2^23421237 is an apocalyptic number.

It is an amenable number.

23421237 is a deficient number, since it is larger than the sum of its proper divisors (12268299).

23421237 is a wasteful number, since it uses less digits than its factorization.

23421237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115307.

The product of its digits is 2016, while the sum is 24.

The square root of 23421237 is about 4839.5492558708. The cubic root of 23421237 is about 286.1123533661.

Adding to 23421237 its reverse (73212432), we get a palindrome (96633669).

The spelling of 23421237 in words is "twenty-three million, four hundred twenty-one thousand, two hundred thirty-seven".