31243077112 has 32 divisors (see below), whose sum is σ = 64121208480. Its totient is φ = 14183487360.

The previous prime is 31243077083. The next prime is 31243077133. The reversal of 31243077112 is 21177034213.

It is a super-2 number, since 2×31243077112² (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 7 ways as a sum of consecutive naturals, for example, 2456068 + ... + 2468755.

It is an arithmetic number, because the mean of its divisors is an integer number (2003787765).

Almost surely, 2^31243077112 is an apocalyptic number.

It is an amenable number.

31243077112 is an abundant number, since it is smaller than the sum of its proper divisors (32878131368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31243077112 is a wasteful number, since it uses less digits than its factorization.

31243077112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924903 (or 4924899 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 31243077112 in words is "thirty-one billion, two hundred forty-three million, seventy-seven thousand, one hundred twelve".