31023220030000 has 200 divisors, whose sum is σ = 82034388905040. Its totient is φ = 11267973120000.

The previous prime is 31023220029917. The next prime is 31023220030039. The reversal of 31023220030000 is 3002232013.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 94105456 + ... + 94434544.

Almost surely, 2^{31023220030000} 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 31023220030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41017194452520).

31023220030000 is an abundant number, since it is smaller than the sum of its proper divisors (51011168875040).

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

31023220030000 is a wasteful number, since it uses less digits than its factorization.

31023220030000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329985 (or 329964 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 31023220030000 its reverse (3002232013), we get a palindrome (31026222262013).

The spelling of 31023220030000 in words is "thirty-one trillion, twenty-three billion, two hundred twenty million, thirty thousand".