31302232020000 has 360 divisors, whose sum is σ = 114822262114560. Its totient is φ = 8077993920000.

The previous prime is 31302232019987. The next prime is 31302232020023. The reversal of 31302232020000 is 2023220313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2775141 + ... + 8384859.

It is an arithmetic number, because the mean of its divisors is an integer number (318950728096).

Almost surely, 2^{31302232020000} is an apocalyptic number.

31302232020000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31302232020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57411131057280).

31302232020000 is an abundant number, since it is smaller than the sum of its proper divisors (83520030094560).

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

31302232020000 is a wasteful number, since it uses less digits than its factorization.

31302232020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609786 (or 5609760 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 31302232020000 its reverse (2023220313), we get a palindrome (31304255240313).

The spelling of 31302232020000 in words is "thirty-one trillion, three hundred two billion, two hundred thirty-two million, twenty thousand".