31504673673 has 48 divisors (see below), whose sum is σ = 50131341312. Its totient is φ = 18907020000.

The previous prime is 31504673663. The next prime is 31504673677. The reversal of 31504673673 is 37637640513.

It is a happy number.

31504673673 is a `hidden beast` number, since 3 + 1 + 504 + 6 + 73 + 6 + 73 = 666.

It is not a de Polignac number, because 31504673673 - 2¹⁰ = 31504672649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31504673677) 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 47 ways as a sum of consecutive naturals, for example, 4944936 + ... + 4951302.

It is an arithmetic number, because the mean of its divisors is an integer number (1044402944).

Almost surely, 2^31504673673 is an apocalyptic number.

31504673673 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31504673673 is a deficient number, since it is larger than the sum of its proper divisors (18626667639).

31504673673 is a wasteful number, since it uses less digits than its factorization.

31504673673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6866 (or 6863 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 45.

The spelling of 31504673673 in words is "thirty-one billion, five hundred four million, six hundred seventy-three thousand, six hundred seventy-three".