31608040308 has 24 divisors (see below), whose sum is σ = 79425332448. Its totient is φ = 9725550816.

The previous prime is 31608040259. The next prime is 31608040309. The reversal of 31608040308 is 80304080613.

It is a super-2 number, since 2×31608040308² (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 (31608040309) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 101307666 + ... + 101307977.

It is an arithmetic number, because the mean of its divisors is an integer number (3309388852).

Almost surely, 2^31608040308 is an apocalyptic number.

It is an amenable number.

31608040308 is an abundant number, since it is smaller than the sum of its proper divisors (47817292140).

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

31608040308 is a wasteful number, since it uses less digits than its factorization.

31608040308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202615663 (or 202615661 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 31608040308 in words is "thirty-one billion, six hundred eight million, forty thousand, three hundred eight".