31389409073 has 8 divisors (see below), whose sum is σ = 35347604736. Its totient is φ = 27615315600.

The previous prime is 31389409069. The next prime is 31389409087. The reversal of 31389409073 is 37090498313.

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 31389409073 - 2² = 31389409069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31389409003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46025186 + ... + 46025867.

It is an arithmetic number, because the mean of its divisors is an integer number (4418450592).

Almost surely, 2^31389409073 is an apocalyptic number.

It is an amenable number.

31389409073 is a deficient number, since it is larger than the sum of its proper divisors (3958195663).

31389409073 is a wasteful number, since it uses less digits than its factorization.

31389409073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92051095.

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 31389409073 in words is "thirty-one billion, three hundred eighty-nine million, four hundred nine thousand, seventy-three".