31422424213 has 2 divisors, whose sum is σ = 31422424214. Its totient is φ = 31422424212.

The previous prime is 31422424207. The next prime is 31422424261. The reversal of 31422424213 is 31242422413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24649628004 + 6772796209 = 157002^2 + 82297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31422424213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31422424273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711212106 + 15711212107.

It is an arithmetic number, because the mean of its divisors is an integer number (15711212107).

Almost surely, 2^31422424213 is an apocalyptic number.

It is an amenable number.

31422424213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31422424213 is an equidigital number, since it uses as much as digits as its factorization.

31422424213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

Adding to 31422424213 its reverse (31242422413), we get a palindrome (62664846626).

The spelling of 31422424213 in words is "thirty-one billion, four hundred twenty-two million, four hundred twenty-four thousand, two hundred thirteen".