23212313 has 16 divisors (see below), whose sum is σ = 25090560. Its totient is φ = 21422016.

The previous prime is 23212297. The next prime is 23212331. The reversal of 23212313 is 31321232.

It is not a de Polignac number, because 23212313 - 2⁴ = 23212297 is a prime.

It is a super-2 number, since 2×23212313² = 1077622949619938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23212291 and 23212300.

It is not an unprimeable number, because it can be changed into a prime (23212373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117731 + ... + 117927.

It is an arithmetic number, because the mean of its divisors is an integer number (1568160).

Almost surely, 2^23212313 is an apocalyptic number.

23212313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23212313 is a deficient number, since it is larger than the sum of its proper divisors (1878247).

23212313 is a wasteful number, since it uses less digits than its factorization.

23212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its digits is 216, while the sum is 17.

The square root of 23212313 is about 4817.9158357115. The cubic root of 23212313 is about 285.2590770257.

Adding to 23212313 its reverse (31321232), we get a palindrome (54533545).

The spelling of 23212313 in words is "twenty-three million, two hundred twelve thousand, three hundred thirteen".