31663425654 has 24 divisors (see below), whose sum is σ = 78404673360. Its totient is φ = 9046693008.

The previous prime is 31663425643. The next prime is 31663425659. The reversal of 31663425654 is 45652436613.

31663425654 is a `hidden beast` number, since 3 + 1 + 6 + 634 + 2 + 5 + 6 + 5 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31663425659) 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 11 ways as a sum of consecutive naturals, for example, 125648389 + ... + 125648640.

It is an arithmetic number, because the mean of its divisors is an integer number (3266861390).

Almost surely, 2^31663425654 is an apocalyptic number.

31663425654 is an abundant number, since it is smaller than the sum of its proper divisors (46741247706).

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

31663425654 is a wasteful number, since it uses less digits than its factorization.

31663425654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251297044 (or 251297041 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 31663425654 in words is "thirty-one billion, six hundred sixty-three million, four hundred twenty-five thousand, six hundred fifty-four".