231223211983 has 2 divisors, whose sum is σ = 231223211984. Its totient is φ = 231223211982.

The previous prime is 231223211981. The next prime is 231223212007. The reversal of 231223211983 is 389112322132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231223211983 - 2¹ = 231223211981 is a prime.

Together with 231223211981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231223211981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115611605991 + 115611605992.

It is an arithmetic number, because the mean of its divisors is an integer number (115611605992).

Almost surely, 2^231223211983 is an apocalyptic number.

231223211983 is a deficient number, since it is larger than the sum of its proper divisors (1).

231223211983 is an equidigital number, since it uses as much as digits as its factorization.

231223211983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The spelling of 231223211983 in words is "two hundred thirty-one billion, two hundred twenty-three million, two hundred eleven thousand, nine hundred eighty-three".