31422738013 has 2 divisors, whose sum is σ = 31422738014. Its totient is φ = 31422738012.

The previous prime is 31422737959. The next prime is 31422738047. The reversal of 31422738013 is 31083722413.

It is an a-pointer prime, because the next prime (31422738047) can be obtained adding 31422738013 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23127718084 + 8295019929 = 152078^2 + 91077^2 .

It is a cyclic number.

It is not a de Polignac number, because 31422738013 - 2²¹ = 31420640861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31422738013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31422736013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711369006 + 15711369007.

It is an arithmetic number, because the mean of its divisors is an integer number (15711369007).

Almost surely, 2^31422738013 is an apocalyptic number.

It is an amenable number.

31422738013 is a deficient number, since it is larger than the sum of its proper divisors (1).

31422738013 is an equidigital number, since it uses as much as digits as its factorization.

31422738013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 31422738013 in words is "thirty-one billion, four hundred twenty-two million, seven hundred thirty-eight thousand, thirteen".