31072156424 has 16 divisors (see below), whose sum is σ = 58262241600. Its totient is φ = 15535558672.

The previous prime is 31072156411. The next prime is 31072156433. The reversal of 31072156424 is 42465127013.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 331829 + ... + 415035.

It is an arithmetic number, because the mean of its divisors is an integer number (3641390100).

Almost surely, 2^31072156424 is an apocalyptic number.

It is an amenable number.

31072156424 is a deficient number, since it is larger than the sum of its proper divisors (27190085176).

31072156424 is a wasteful number, since it uses less digits than its factorization.

31072156424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129892 (or 129888 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 31072156424 in words is "thirty-one billion, seventy-two million, one hundred fifty-six thousand, four hundred twenty-four".