23131853 has 2 divisors, whose sum is σ = 23131854. Its totient is φ = 23131852.

The previous prime is 23131837. The next prime is 23131861. The reversal of 23131853 is 35813132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20097289 + 3034564 = 4483^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131853 - 2⁴ = 23131837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23131453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565926 + 11565927.

It is an arithmetic number, because the mean of its divisors is an integer number (11565927).

Almost surely, 2^23131853 is an apocalyptic number.

It is an amenable number.

23131853 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131853 is an equidigital number, since it uses as much as digits as its factorization.

23131853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 23131853 is about 4809.5585036467. The cubic root of 23131853 is about 284.9291010673.

Adding to 23131853 its reverse (35813132), we get a palindrome (58944985).

The spelling of 23131853 in words is "twenty-three million, one hundred thirty-one thousand, eight hundred fifty-three".