31430330320000 has 160 divisors (see below), whose sum is σ = 82846425517020. Its totient is φ = 11832594432000.

The previous prime is 31430330319967. The next prime is 31430330320003. The reversal of 31430330320000 is 2303303413.

It can be written as a sum of positive squares in 10 ways, for example, as 87620736064 + 31342709583936 = 296008^2 + 5598456^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×31430330320000² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31430330320003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10195269 + ... + 12915268.

Almost surely, 2^{31430330320000} is an apocalyptic number.

It is an amenable number.

31430330320000 is an abundant number, since it is smaller than the sum of its proper divisors (51416095197020).

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

31430330320000 is an equidigital number, since it uses as much as digits as its factorization.

31430330320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23110588 (or 23110561 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 31430330320000 its reverse (2303303413), we get a palindrome (31432633623413).

The spelling of 31430330320000 in words is "thirty-one trillion, four hundred thirty billion, three hundred thirty million, three hundred twenty thousand".