31669411968 has 128 divisors (see below), whose sum is σ = 95001657600. Its totient is φ = 10383344640.

The previous prime is 31669411927. The next prime is 31669412051. The reversal of 31669411968 is 86911496613.

It is a happy number.

31669411968 is a `hidden beast` number, since 3 + 166 + 9 + 411 + 9 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135705 + ... + 285927.

It is an arithmetic number, because the mean of its divisors is an integer number (742200450).

Almost surely, 2^31669411968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31669411968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47500828800).

31669411968 is an abundant number, since it is smaller than the sum of its proper divisors (63332245632).

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

31669411968 is a wasteful number, since it uses less digits than its factorization.

31669411968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150307 (or 150289 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 31669411968 in words is "thirty-one billion, six hundred sixty-nine million, four hundred eleven thousand, nine hundred sixty-eight".