31366643022 has 144 divisors (see below), whose sum is σ = 81084656016. Its totient is φ = 8686080000.

The previous prime is 31366642997. The next prime is 31366643029. The reversal of 31366643022 is 22034666313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31366643029) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3375022 + ... + 3384302.

It is an arithmetic number, because the mean of its divisors is an integer number (563087889).

Almost surely, 2^31366643022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31366643022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40542328008).

31366643022 is an abundant number, since it is smaller than the sum of its proper divisors (49718012994).

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

31366643022 is a wasteful number, since it uses less digits than its factorization.

31366643022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427 (or 9411 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 31366643022 in words is "thirty-one billion, three hundred sixty-six million, six hundred forty-three thousand, twenty-two".