31200030340 has 96 divisors (see below), whose sum is σ = 70108416000. Its totient is φ = 11629037952.

The previous prime is 31200030287. The next prime is 31200030341. The reversal of 31200030340 is 4303000213.

It is not an unprimeable number, because it can be changed into a prime (31200030341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7535991 + ... + 7540129.

It is an arithmetic number, because the mean of its divisors is an integer number (730296000).

Almost surely, 2^31200030340 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 31200030340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35054208000).

31200030340 is an abundant number, since it is smaller than the sum of its proper divisors (38908385660).

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

31200030340 is a wasteful number, since it uses less digits than its factorization.

31200030340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489 (or 4487 counting only the distinct ones).

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

Adding to 31200030340 its reverse (4303000213), we get a palindrome (35503030553).

The spelling of 31200030340 in words is "thirty-one billion, two hundred million, thirty thousand, three hundred forty".