31729133142718 has 16 divisors (see below), whose sum is σ = 51920852330880. Its totient is φ = 14422207512600.

The previous prime is 31729133142713. The next prime is 31729133142731. The reversal of 31729133142718 is 81724133192713.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31729133142713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3681858 + ... + 8775781.

It is an arithmetic number, because the mean of its divisors is an integer number (3245053270680).

Almost surely, 2^{31729133142718} is an apocalyptic number.

31729133142718 is a deficient number, since it is larger than the sum of its proper divisors (20191719188162).

31729133142718 is a wasteful number, since it uses less digits than its factorization.

31729133142718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12573423.

The product of its digits is 1524096, while the sum is 52.

The spelling of 31729133142718 in words is "thirty-one trillion, seven hundred twenty-nine billion, one hundred thirty-three million, one hundred forty-two thousand, seven hundred eighteen".