1031304201720 has 64 divisors (see below), whose sum is σ = 3331905887520. Its totient is φ = 253859495424.

The previous prime is 1031304201713. The next prime is 1031304201743. The reversal of 1031304201720 is 271024031301.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 15 ways as a sum of consecutive naturals, for example, 330544659 + ... + 330547778.

Almost surely, 2^{1031304201720} is an apocalyptic number.

1031304201720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031304201720 is an abundant number, since it is smaller than the sum of its proper divisors (2300601685800).

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

1031304201720 is a wasteful number, since it uses less digits than its factorization.

1031304201720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661092464 (or 661092460 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The spelling of 1031304201720 in words is "one trillion, thirty-one billion, three hundred four million, two hundred one thousand, seven hundred twenty".