31671714531 has 4 divisors (see below), whose sum is σ = 42228952712. Its totient is φ = 21114476352.

The previous prime is 31671714521. The next prime is 31671714583. The reversal of 31671714531 is 13541717613.

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

It is not a de Polignac number, because 31671714531 - 2³⁰ = 30597972707 is a prime.

It is a super-2 number, since 2×31671714531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31671714531.

It is not an unprimeable number, because it can be changed into a prime (31671714521) 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, 5278619086 + ... + 5278619091.

It is an arithmetic number, because the mean of its divisors is an integer number (10557238178).

Almost surely, 2^31671714531 is an apocalyptic number.

31671714531 is a deficient number, since it is larger than the sum of its proper divisors (10557238181).

31671714531 is a wasteful number, since it uses less digits than its factorization.

31671714531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557238180.

The product of its digits is 52920, while the sum is 39.

The spelling of 31671714531 in words is "thirty-one billion, six hundred seventy-one million, seven hundred fourteen thousand, five hundred thirty-one".