31081516339 has 8 divisors (see below), whose sum is σ = 32727187280. Its totient is φ = 29436825600.

The previous prime is 31081516289. The next prime is 31081516351. The reversal of 31081516339 is 93361518013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31081516339 - 2²¹ = 31079419187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31081516379) 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 7 ways as a sum of consecutive naturals, for example, 179502 + ... + 307219.

It is an arithmetic number, because the mean of its divisors is an integer number (4090898410).

Almost surely, 2^31081516339 is an apocalyptic number.

31081516339 is a deficient number, since it is larger than the sum of its proper divisors (1645670941).

31081516339 is a wasteful number, since it uses less digits than its factorization.

31081516339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490101.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 31081516339 in words is "thirty-one billion, eighty-one million, five hundred sixteen thousand, three hundred thirty-nine".