31350467847 has 4 divisors (see below), whose sum is σ = 41800623800. Its totient is φ = 20900311896.

The previous prime is 31350467809. The next prime is 31350467849. The reversal of 31350467847 is 74876405313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74876405313 = 3 ⋅24958801771.

It is not a de Polignac number, because 31350467847 - 2¹⁶ = 31350402311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31350467796 and 31350467805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31350467849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5225077972 + ... + 5225077977.

It is an arithmetic number, because the mean of its divisors is an integer number (10450155950).

Almost surely, 2^31350467847 is an apocalyptic number.

31350467847 is a deficient number, since it is larger than the sum of its proper divisors (10450155953).

31350467847 is a wasteful number, since it uses less digits than its factorization.

31350467847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450155952.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 31350467847 in words is "thirty-one billion, three hundred fifty million, four hundred sixty-seven thousand, eight hundred forty-seven".