31300312000 has 112 divisors (see below), whose sum is σ = 77908708800. Its totient is φ = 12456576000.

The previous prime is 31300311997. The next prime is 31300312027. The reversal of 31300312000 is 21300313.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1582170 + ... + 1601830.

Almost surely, 2^31300312000 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 31300312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38954354400).

31300312000 is an abundant number, since it is smaller than the sum of its proper divisors (46608396800).

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

31300312000 is a wasteful number, since it uses less digits than its factorization.

31300312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19887 (or 19867 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 31300312000 its reverse (21300313), we get a palindrome (31321612313).

The spelling of 31300312000 in words is "thirty-one billion, three hundred million, three hundred twelve thousand".