31841429720 has 16 divisors (see below), whose sum is σ = 71643216960. Its totient is φ = 12736571872.

The previous prime is 31841429707. The next prime is 31841429749. The reversal of 31841429720 is 2792414813.

It is a super-2 number, since 2×31841429720² (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, 398017832 + ... + 398017911.

It is an arithmetic number, because the mean of its divisors is an integer number (4477701060).

Almost surely, 2^31841429720 is an apocalyptic number.

It is an amenable number.

31841429720 is an abundant number, since it is smaller than the sum of its proper divisors (39801787240).

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

31841429720 is a wasteful number, since it uses less digits than its factorization.

31841429720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796035754 (or 796035750 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 31841429720 in words is "thirty-one billion, eight hundred forty-one million, four hundred twenty-nine thousand, seven hundred twenty".