31540343304 has 48 divisors (see below), whose sum is σ = 83762002800. Its totient is φ = 9895007488.

The previous prime is 31540343239. The next prime is 31540343309. The reversal of 31540343304 is 40334304513.

It is not an unprimeable number, because it can be changed into a prime (31540343309) 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 11 ways as a sum of consecutive naturals, for example, 2266734 + ... + 2280605.

It is an arithmetic number, because the mean of its divisors is an integer number (1745041725).

Almost surely, 2^31540343304 is an apocalyptic number.

31540343304 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31540343304 is an abundant number, since it is smaller than the sum of its proper divisors (52221659496).

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

31540343304 is a wasteful number, since it uses less digits than its factorization.

31540343304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547382 (or 4547361 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 31540343304 its reverse (40334304513), we get a palindrome (71874647817).

The spelling of 31540343304 in words is "thirty-one billion, five hundred forty million, three hundred forty-three thousand, three hundred four".