31422738047 has 2 divisors, whose sum is σ = 31422738048. Its totient is φ = 31422738046.

The previous prime is 31422738013. The next prime is 31422738089. The reversal of 31422738047 is 74083722413.

It is a weak prime.

It is an emirp because it is prime and its reverse (74083722413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31422738047 - 2¹⁰ = 31422737023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31422737995 and 31422738013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31422734047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711369023 + 15711369024.

It is an arithmetic number, because the mean of its divisors is an integer number (15711369024).

Almost surely, 2^31422738047 is an apocalyptic number.

31422738047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31422738047 is an equidigital number, since it uses as much as digits as its factorization.

31422738047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 31422738047 in words is "thirty-one billion, four hundred twenty-two million, seven hundred thirty-eight thousand, forty-seven".