31422222427 has 2 divisors, whose sum is σ = 31422222428. Its totient is φ = 31422222426.

The previous prime is 31422222371. The next prime is 31422222443. The reversal of 31422222427 is 72422222413.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31422222427 is a prime.

It is not a weakly prime, because it can be changed into another prime (31422222497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711111213 + 15711111214.

It is an arithmetic number, because the mean of its divisors is an integer number (15711111214).

Almost surely, 2^31422222427 is an apocalyptic number.

31422222427 is a deficient number, since it is larger than the sum of its proper divisors (1).

31422222427 is an equidigital number, since it uses as much as digits as its factorization.

31422222427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 31.

The spelling of 31422222427 in words is "thirty-one billion, four hundred twenty-two million, two hundred twenty-two thousand, four hundred twenty-seven".