31628420504 has 8 divisors (see below), whose sum is σ = 59303288460. Its totient is φ = 15814210248.

The previous prime is 31628420501. The next prime is 31628420507. The reversal of 31628420504 is 40502482613.

It is an interprime number because it is at equal distance from previous prime (31628420501) and next prime (31628420507).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31628420504² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31628420501) 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 as a sum of consecutive naturals, namely, 1976776274 + ... + 1976776289.

Almost surely, 2^31628420504 is an apocalyptic number.

It is an amenable number.

31628420504 is a deficient number, since it is larger than the sum of its proper divisors (27674867956).

31628420504 is a wasteful number, since it uses less digits than its factorization.

31628420504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953552569 (or 3953552565 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 31628420504 in words is "thirty-one billion, six hundred twenty-eight million, four hundred twenty thousand, five hundred four".