31381059608 has 64 divisors (see below), whose sum is σ = 62424587520. Its totient is φ = 14758128000.

The previous prime is 31381059607. The next prime is 31381059613. The reversal of 31381059608 is 80695018313.

31381059608 is nontrivially palindromic in base 3 and base 9.

It is a Cunningham number, because it is equal to 3²²-1.

It is a super-2 number, since 2×31381059608² (a number of 22 digits) contains 22 as substring.

31381059608 is a nontrivial repdigit in base 3 and base 9.

It is a plaindrome in base 3 and base 9.

It is a nialpdrome in base 3 and base 9.

It is a zygodrome in base 3 and base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31381059601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8146883 + ... + 8150733.

It is an arithmetic number, because the mean of its divisors is an integer number (975384180).

Almost surely, 2^31381059608 is an apocalyptic number.

It is an amenable number.

31381059608 is a deficient number, since it is larger than the sum of its proper divisors (31043527912).

31381059608 is a wasteful number, since it uses less digits than its factorization.

31381059608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608 (or 4604 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 31381059608 in words is "thirty-one billion, three hundred eighty-one million, fifty-nine thousand, six hundred eight".