31242959668 has 12 divisors (see below), whose sum is σ = 54676609092. Its totient is φ = 15621071360.

The previous prime is 31242959659. The next prime is 31242959707. The reversal of 31242959668 is 86695924213.

It can be written as a sum of positive squares in 2 ways, for example, as 29234844324 + 2008115344 = 170982^2 + 44812^2 .

It is a super-2 number, since 2×31242959668² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127188 + ... + 280468.

It is an arithmetic number, because the mean of its divisors is an integer number (4556384091).

Almost surely, 2^31242959668 is an apocalyptic number.

It is an amenable number.

31242959668 is a deficient number, since it is larger than the sum of its proper divisors (23433649424).

31242959668 is a wasteful number, since it uses less digits than its factorization.

31242959668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204242 (or 204240 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 55.

The spelling of 31242959668 in words is "thirty-one billion, two hundred forty-two million, nine hundred fifty-nine thousand, six hundred sixty-eight".