31030003321312 has 96 divisors (see below), whose sum is σ = 63421424085600. Its totient is φ = 14926860748800.

The previous prime is 31030003321307. The next prime is 31030003321319. The reversal of 31030003321312 is 21312330003013.

It is a super-2 number, since 2×31030003321312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030003321319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335554762 + ... + 335647222.

It is an arithmetic number, because the mean of its divisors is an integer number (660639834225).

Almost surely, 2^{31030003321312} is an apocalyptic number.

31030003321312 is a gapful number since it is divisible by the number (32) 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 31030003321312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31710712042800).

31030003321312 is an abundant number, since it is smaller than the sum of its proper divisors (32391420764288).

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

31030003321312 is a wasteful number, since it uses less digits than its factorization.

31030003321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93780 (or 93772 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31030003321312 its reverse (21312330003013), we get a palindrome (52342333324325).

The spelling of 31030003321312 in words is "thirty-one trillion, thirty billion, three million, three hundred twenty-one thousand, three hundred twelve".