31300320000 has 360 divisors, whose sum is σ = 105902787760. Its totient is φ = 8202240000.

The previous prime is 31300319977. The next prime is 31300320013. The reversal of 31300320000 is 2300313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 29279466 + ... + 29280534.

Almost surely, 2^31300320000 is an apocalyptic number.

31300320000 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 31300320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52951393880).

31300320000 is an abundant number, since it is smaller than the sum of its proper divisors (74602467760).

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

31300320000 is an equidigital number, since it uses as much as digits as its factorization.

31300320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 31300320000 its reverse (2300313), we get a palindrome (31302620313).

The spelling of 31300320000 in words is "thirty-one billion, three hundred million, three hundred twenty thousand".