23131333 has 2 divisors, whose sum is σ = 23131334. Its totient is φ = 23131332.

The previous prime is 23131289. The next prime is 23131351. The reversal of 23131333 is 33313132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22724289 + 407044 = 4767^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131333 - 2¹⁷ = 23000261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23131333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23131393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565666 + 11565667.

It is an arithmetic number, because the mean of its divisors is an integer number (11565667).

Almost surely, 2^23131333 is an apocalyptic number.

It is an amenable number.

23131333 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131333 is an equidigital number, since it uses as much as digits as its factorization.

23131333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 19.

The square root of 23131333 is about 4809.5044443269. The cubic root of 23131333 is about 284.9269659992.

Adding to 23131333 its reverse (33313132), we get a palindrome (56444465).

The spelling of 23131333 in words is "twenty-three million, one hundred thirty-one thousand, three hundred thirty-three".