31321042039 has 8 divisors (see below), whose sum is σ = 35819528480. Its totient is φ = 26828568576.

The previous prime is 31321042001. The next prime is 31321042091. The reversal of 31321042039 is 93024012313.

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 31321042039 - 2⁷ = 31321041911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321041998 and 31321042016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321042639) 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, 1492074 + ... + 1512919.

It is an arithmetic number, because the mean of its divisors is an integer number (4477441060).

Almost surely, 2^31321042039 is an apocalyptic number.

31321042039 is a deficient number, since it is larger than the sum of its proper divisors (4498486441).

31321042039 is a wasteful number, since it uses less digits than its factorization.

31321042039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006489.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 31321042039 in words is "thirty-one billion, three hundred twenty-one million, forty-two thousand, thirty-nine".