23343131 has 4 divisors (see below), whose sum is σ = 26677872. Its totient is φ = 20008392.

The previous prime is 23343097. The next prime is 23343139. The reversal of 23343131 is 13134332.

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

It is a cyclic number.

It is not a de Polignac number, because 23343131 - 2¹⁰ = 23342107 is a prime.

It is a super-2 number, since 2×23343131² = 1089803529766322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23343139) 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, 1667360 + ... + 1667373.

It is an arithmetic number, because the mean of its divisors is an integer number (6669468).

Almost surely, 2^23343131 is an apocalyptic number.

23343131 is a deficient number, since it is larger than the sum of its proper divisors (3334741).

23343131 is an equidigital number, since it uses as much as digits as its factorization.

23343131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334740.

The product of its digits is 648, while the sum is 20.

The square root of 23343131 is about 4831.4729638072. The cubic root of 23343131 is about 285.7939531766.

Adding to 23343131 its reverse (13134332), we get a palindrome (36477463).

The spelling of 23343131 in words is "twenty-three million, three hundred forty-three thousand, one hundred thirty-one".