231221001030007 has 2 divisors, whose sum is σ = 231221001030008. Its totient is φ = 231221001030006.

The previous prime is 231221001029989. The next prime is 231221001030017. The reversal of 231221001030007 is 700030100122132.

It is a happy number.

231221001030007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231221001030007 - 2²³ = 231220992641399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231221001030007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231221001030017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115610500515003 + 115610500515004.

It is an arithmetic number, because the mean of its divisors is an integer number (115610500515004).

Almost surely, 2^{231221001030007} is an apocalyptic number.

231221001030007 is a deficient number, since it is larger than the sum of its proper divisors (1).

231221001030007 is an equidigital number, since it uses as much as digits as its factorization.

231221001030007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 231221001030007 its reverse (700030100122132), we get a palindrome (931251101152139).

The spelling of 231221001030007 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, one million, thirty thousand, seven".