31445839994 has 8 divisors (see below), whose sum is σ = 47485329300. Its totient is φ = 15617396896.

The previous prime is 31445839991. The next prime is 31445840017. The reversal of 31445839994 is 49993854413.

It can be written as a sum of positive squares in 2 ways, for example, as 31369014769 + 76825225 = 177113^2 + 8765^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31445839991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52761179 + ... + 52761774.

Almost surely, 2^31445839994 is an apocalyptic number.

31445839994 is a deficient number, since it is larger than the sum of its proper divisors (16039489306).

31445839994 is a wasteful number, since it uses less digits than its factorization.

31445839994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105523104.

The product of its digits is 16796160, while the sum is 59.

The spelling of 31445839994 in words is "thirty-one billion, four hundred forty-five million, eight hundred thirty-nine thousand, nine hundred ninety-four".