31628743082 has 8 divisors (see below), whose sum is σ = 47448876900. Its totient is φ = 15812450784.

The previous prime is 31628743073. The next prime is 31628743087. The reversal of 31628743082 is 28034782613.

It can be written as a sum of positive squares in 2 ways, for example, as 31601817361 + 26925721 = 177769^2 + 5189^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31628743087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939707 + ... + 972782.

Almost surely, 2^31628743082 is an apocalyptic number.

31628743082 is a deficient number, since it is larger than the sum of its proper divisors (15820133818).

31628743082 is a wasteful number, since it uses less digits than its factorization.

31628743082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920760.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 31628743082 in words is "thirty-one billion, six hundred twenty-eight million, seven hundred forty-three thousand, eighty-two".