31747461747 has 8 divisors (see below), whose sum is σ = 42351675600. Its totient is φ = 21154111200.

The previous prime is 31747461743. The next prime is 31747461749. The reversal of 31747461747 is 74716474713.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31747461747 - 2² = 31747461743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31747461747.

It is not an unprimeable number, because it can be changed into a prime (31747461743) 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, 2709004 + ... + 2720697.

It is an arithmetic number, because the mean of its divisors is an integer number (5293959450).

Almost surely, 2^31747461747 is an apocalyptic number.

31747461747 is a deficient number, since it is larger than the sum of its proper divisors (10604213853).

31747461747 is a wasteful number, since it uses less digits than its factorization.

31747461747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431653.

The product of its digits is 2765952, while the sum is 51.

The spelling of 31747461747 in words is "thirty-one billion, seven hundred forty-seven million, four hundred sixty-one thousand, seven hundred forty-seven".