31301212223 has 2 divisors, whose sum is σ = 31301212224. Its totient is φ = 31301212222.

The previous prime is 31301212183. The next prime is 31301212231. The reversal of 31301212223 is 32221210313.

It is a strong prime.

It is an emirp because it is prime and its reverse (32221210313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31301212223 - 2³² = 27006244927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31301212195 and 31301212204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31301217223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650606111 + 15650606112.

It is an arithmetic number, because the mean of its divisors is an integer number (15650606112).

Almost surely, 2^31301212223 is an apocalyptic number.

31301212223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301212223 is an equidigital number, since it uses as much as digits as its factorization.

31301212223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31301212223 its reverse (32221210313), we get a palindrome (63522422536).

The spelling of 31301212223 in words is "thirty-one billion, three hundred one million, two hundred twelve thousand, two hundred twenty-three".