31216759142417 has 8 divisors (see below), whose sum is σ = 31472724011976. Its totient is φ = 30961836900352.

The previous prime is 31216759142411. The next prime is 31216759142467. The reversal of 31216759142417 is 71424195761213.

It is a happy number.

It is a Cunningham number, because it is equal to 5587196²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3523894857616 + 27692864284801 = 1877204^2 + 5262401^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31216759142417 - 2⁴² = 26818712631313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31216759142411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260596748 + ... + 260716509.

It is an arithmetic number, because the mean of its divisors is an integer number (3934090501497).

Almost surely, 2^{31216759142417} is an apocalyptic number.

It is an amenable number.

31216759142417 is a deficient number, since it is larger than the sum of its proper divisors (255964869559).

31216759142417 is a wasteful number, since it uses less digits than its factorization.

31216759142417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521313747.

The product of its digits is 2540160, while the sum is 53.

The spelling of 31216759142417 in words is "thirty-one trillion, two hundred sixteen billion, seven hundred fifty-nine million, one hundred forty-two thousand, four hundred seventeen".