31728587460286 has 4 divisors (see below), whose sum is σ = 47592881190432. Its totient is φ = 15864293730142.

The previous prime is 31728587460233. The next prime is 31728587460287. The reversal of 31728587460286 is 68206478582713.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31728587460287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7932146865070 + ... + 7932146865073.

It is an arithmetic number, because the mean of its divisors is an integer number (11898220297608).

Almost surely, 2^{31728587460286} is an apocalyptic number.

31728587460286 is a deficient number, since it is larger than the sum of its proper divisors (15864293730146).

31728587460286 is a wasteful number, since it uses less digits than its factorization.

31728587460286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15864293730145.

The product of its (nonzero) digits is 216760320, while the sum is 67.

The spelling of 31728587460286 in words is "thirty-one trillion, seven hundred twenty-eight billion, five hundred eighty-seven million, four hundred sixty thousand, two hundred eighty-six".