31116426347 has 2 divisors, whose sum is σ = 31116426348. Its totient is φ = 31116426346.

The previous prime is 31116426317. The next prime is 31116426353. The reversal of 31116426347 is 74362461113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31116426347 - 2⁶ = 31116426283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31116426347.

It is not a weakly prime, because it can be changed into another prime (31116426317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15558213173 + 15558213174.

It is an arithmetic number, because the mean of its divisors is an integer number (15558213174).

Almost surely, 2^31116426347 is an apocalyptic number.

31116426347 is a deficient number, since it is larger than the sum of its proper divisors (1).

31116426347 is an equidigital number, since it uses as much as digits as its factorization.

31116426347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The spelling of 31116426347 in words is "thirty-one billion, one hundred sixteen million, four hundred twenty-six thousand, three hundred forty-seven".