31543671713145 has 8 divisors (see below), whose sum is σ = 50469874741056. Its totient is φ = 16823291580336.

The previous prime is 31543671713143. The next prime is 31543671713149. The reversal of 31543671713145 is 54131717634513.

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

It is not a de Polignac number, because 31543671713145 - 2¹ = 31543671713143 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (31543671713143) 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, 1051455723757 + ... + 1051455723786.

It is an arithmetic number, because the mean of its divisors is an integer number (6308734342632).

Almost surely, 2^{31543671713145} is an apocalyptic number.

It is an amenable number.

31543671713145 is a deficient number, since it is larger than the sum of its proper divisors (18926203027911).

31543671713145 is a wasteful number, since it uses less digits than its factorization.

31543671713145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102911447551.

The product of its digits is 3175200, while the sum is 51.

The spelling of 31543671713145 in words is "thirty-one trillion, five hundred forty-three billion, six hundred seventy-one million, seven hundred thirteen thousand, one hundred forty-five".