31455305047 has 2 divisors, whose sum is σ = 31455305048. Its totient is φ = 31455305046.

The previous prime is 31455305041. The next prime is 31455305099. The reversal of 31455305047 is 74050355413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31455305047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31455304997 and 31455305015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31455305041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15727652523 + 15727652524.

It is an arithmetic number, because the mean of its divisors is an integer number (15727652524).

Almost surely, 2^31455305047 is an apocalyptic number.

31455305047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31455305047 is an equidigital number, since it uses as much as digits as its factorization.

31455305047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 31455305047 in words is "thirty-one billion, four hundred fifty-five million, three hundred five thousand, forty-seven".