231223212007 has 2 divisors, whose sum is σ = 231223212008. Its totient is φ = 231223212006.

The previous prime is 231223211983. The next prime is 231223212161. The reversal of 231223212007 is 700212322132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231223212007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231223312007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115611606003 + 115611606004.

It is an arithmetic number, because the mean of its divisors is an integer number (115611606004).

Almost surely, 2^231223212007 is an apocalyptic number.

231223212007 is a deficient number, since it is larger than the sum of its proper divisors (1).

231223212007 is an equidigital number, since it uses as much as digits as its factorization.

231223212007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 231223212007 its reverse (700212322132), we get a palindrome (931435534139).

The spelling of 231223212007 in words is "two hundred thirty-one billion, two hundred twenty-three million, two hundred twelve thousand, seven".