31341220020330 has 128 divisors (see below), whose sum is σ = 84710069968896. Its totient is φ = 7352253100800.

The previous prime is 31341220020301. The next prime is 31341220020349. The reversal of 31341220020330 is 3302002214313.

It is a super-2 number, since 2×31341220020330² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31341220020330.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153480957 + ... + 153685023.

It is an arithmetic number, because the mean of its divisors is an integer number (661797421632).

Almost surely, 2^{31341220020330} is an apocalyptic number.

31341220020330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31341220020330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42355034984448).

31341220020330 is an abundant number, since it is smaller than the sum of its proper divisors (53368849948566).

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

31341220020330 is a wasteful number, since it uses less digits than its factorization.

31341220020330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219132.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31341220020330 its reverse (3302002214313), we get a palindrome (34643222234643).

The spelling of 31341220020330 in words is "thirty-one trillion, three hundred forty-one billion, two hundred twenty million, twenty thousand, three hundred thirty".