31728746002 has 8 divisors (see below), whose sum is σ = 48699935856. Its totient is φ = 15495434052.

The previous prime is 31728745921. The next prime is 31728746003. The reversal of 31728746002 is 20064782713.

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 (31728746003) 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, 184469368 + ... + 184469539.

It is an arithmetic number, because the mean of its divisors is an integer number (6087491982).

Almost surely, 2^31728746002 is an apocalyptic number.

31728746002 is a deficient number, since it is larger than the sum of its proper divisors (16971189854).

31728746002 is a wasteful number, since it uses less digits than its factorization.

31728746002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368938952.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 31728746002 in words is "thirty-one billion, seven hundred twenty-eight million, seven hundred forty-six thousand, two".