31742885730 has 16 divisors (see below), whose sum is σ = 76182925824. Its totient is φ = 8464769520.

The previous prime is 31742885701. The next prime is 31742885737. The reversal of 31742885730 is 3758824713.

It is a super-2 number, since 2×31742885730² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31742885730.

It is not an unprimeable number, because it can be changed into a prime (31742885737) 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 7 ways as a sum of consecutive naturals, for example, 529048066 + ... + 529048125.

It is an arithmetic number, because the mean of its divisors is an integer number (4761432864).

Almost surely, 2^31742885730 is an apocalyptic number.

31742885730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31742885730 is an abundant number, since it is smaller than the sum of its proper divisors (44440040094).

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

31742885730 is a wasteful number, since it uses less digits than its factorization.

31742885730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058096201.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 31742885730 in words is "thirty-one billion, seven hundred forty-two million, eight hundred eighty-five thousand, seven hundred thirty".