320243114781 has 20 divisors (see below), whose sum is σ = 479691416512. Its totient is φ = 212913658728.

The previous prime is 320243114689. The next prime is 320243114819. The reversal of 320243114781 is 187411342023.

320243114781 is a `hidden beast` number, since 3 + 2 + 0 + 2 + 431 + 147 + 81 = 666.

It is not a de Polignac number, because 320243114781 - 2¹⁴ = 320243098397 is a prime.

It is a super-2 number, since 2×320243114781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320243114281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5356675 + ... + 5416128.

Almost surely, 2^320243114781 is an apocalyptic number.

It is an amenable number.

320243114781 is a deficient number, since it is larger than the sum of its proper divisors (159448301731).

320243114781 is a wasteful number, since it uses less digits than its factorization.

320243114781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10773182 (or 10773173 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 320243114781 in words is "three hundred twenty billion, two hundred forty-three million, one hundred fourteen thousand, seven hundred eighty-one".