31422007 has 2 divisors, whose sum is σ = 31422008. Its totient is φ = 31422006.

The previous prime is 31421987. The next prime is 31422011. The reversal of 31422007 is 70022413.

It is a strong prime.

It is an emirp because it is prime and its reverse (70022413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31422007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31422037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711003 + 15711004.

It is an arithmetic number, because the mean of its divisors is an integer number (15711004).

Almost surely, 2^31422007 is an apocalyptic number.

31422007 is a deficient number, since it is larger than the sum of its proper divisors (1).

31422007 is an equidigital number, since it uses as much as digits as its factorization.

31422007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 31422007 is about 5605.5336052868. The cubic root of 31422007 is about 315.5571127005.

The spelling of 31422007 in words is "thirty-one million, four hundred twenty-two thousand, seven".