31466803656 has 64 divisors (see below), whose sum is σ = 80741707200. Its totient is φ = 10213299200.

The previous prime is 31466803619. The next prime is 31466803679. The reversal of 31466803656 is 65630866413.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 481975 + ... + 543353.

It is an arithmetic number, because the mean of its divisors is an integer number (1261589175).

Almost surely, 2^31466803656 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 31466803656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40370853600).

31466803656 is an abundant number, since it is smaller than the sum of its proper divisors (49274903544).

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

31466803656 is a wasteful number, since it uses less digits than its factorization.

31466803656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61950 (or 61946 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 31466803656 in words is "thirty-one billion, four hundred sixty-six million, eight hundred three thousand, six hundred fifty-six".