31320671347 has 16 divisors (see below), whose sum is σ = 37948383232. Its totient is φ = 25278104160.

The previous prime is 31320671341. The next prime is 31320671351. The reversal of 31320671347 is 74317602313.

It is a cyclic number.

It is not a de Polignac number, because 31320671347 - 2⁷ = 31320671219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320671341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1942443 + ... + 1958500.

It is an arithmetic number, because the mean of its divisors is an integer number (2371773952).

Almost surely, 2^31320671347 is an apocalyptic number.

31320671347 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

31320671347 is a deficient number, since it is larger than the sum of its proper divisors (6627711885).

31320671347 is a wasteful number, since it uses less digits than its factorization.

31320671347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901018.

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 31320671347 in words is "thirty-one billion, three hundred twenty million, six hundred seventy-one thousand, three hundred forty-seven".