31213322423 has 2 divisors, whose sum is σ = 31213322424. Its totient is φ = 31213322422.

The previous prime is 31213322363. The next prime is 31213322429. The reversal of 31213322423 is 32422331213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31213322423 - 2²⁶ = 31146213559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31213322392 and 31213322401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31213322429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606661211 + 15606661212.

It is an arithmetic number, because the mean of its divisors is an integer number (15606661212).

Almost surely, 2^31213322423 is an apocalyptic number.

31213322423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31213322423 is an equidigital number, since it uses as much as digits as its factorization.

31213322423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 26.

Adding to 31213322423 its reverse (32422331213), we get a palindrome (63635653636).

The spelling of 31213322423 in words is "thirty-one billion, two hundred thirteen million, three hundred twenty-two thousand, four hundred twenty-three".