31981010046 has 8 divisors (see below), whose sum is σ = 63962020104. Its totient is φ = 10660336680.

The previous prime is 31981010027. The next prime is 31981010053. The reversal of 31981010046 is 64001018913.

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

31981010046 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 31981009989 and 31981010016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2665084165 + ... + 2665084176.

It is an arithmetic number, because the mean of its divisors is an integer number (7995252513).

Almost surely, 2^31981010046 is an apocalyptic number.

31981010046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31981010046 is a wasteful number, since it uses less digits than its factorization.

31981010046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330168346.

The product of its (nonzero) digits is 5184, while the sum is 33.

Adding to 31981010046 its reverse (64001018913), we get a palindrome (95982028959).

The spelling of 31981010046 in words is "thirty-one billion, nine hundred eighty-one million, ten thousand, forty-six".