31243026717 has 48 divisors (see below), whose sum is σ = 54642107520. Its totient is φ = 16792989696.

The previous prime is 31243026673. The next prime is 31243026761. The reversal of 31243026717 is 71762034213.

It is an interprime number because it is at equal distance from previous prime (31243026673) and next prime (31243026761).

It is not a de Polignac number, because 31243026717 - 2⁶ = 31243026653 is a prime.

It is a super-2 number, since 2×31243026717² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31243026317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2015398 + ... + 2030840.

It is an arithmetic number, because the mean of its divisors is an integer number (1138377240).

Almost surely, 2^31243026717 is an apocalyptic number.

It is an amenable number.

31243026717 is a deficient number, since it is larger than the sum of its proper divisors (23399080803).

31243026717 is a wasteful number, since it uses less digits than its factorization.

31243026717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17362 (or 17359 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The spelling of 31243026717 in words is "thirty-one billion, two hundred forty-three million, twenty-six thousand, seven hundred seventeen".