31033331340 has 96 divisors (see below), whose sum is σ = 96997291776. Its totient is φ = 7348266240.

The previous prime is 31033331339. The next prime is 31033331387. The reversal of 31033331340 is 4313333013.

It is a self number, because there is not a number n which added to its sum of digits gives 31033331340.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 518367 + ... + 575126.

It is an arithmetic number, because the mean of its divisors is an integer number (1010388456).

Almost surely, 2^31033331340 is an apocalyptic number.

31033331340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31033331340 is an abundant number, since it is smaller than the sum of its proper divisors (65963960436).

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

31033331340 is a wasteful number, since it uses less digits than its factorization.

31033331340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093559 (or 1093557 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 31033331340 its reverse (4313333013), we get a palindrome (35346664353).

The spelling of 31033331340 in words is "thirty-one billion, thirty-three million, three hundred thirty-one thousand, three hundred forty".