20320131707 has 8 divisors (see below), whose sum is σ = 20363310240. Its totient is φ = 20276991360.

The previous prime is 20320131697. The next prime is 20320131721. The reversal of 20320131707 is 70713102302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20320131707 - 2⁴ = 20320131691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320131607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218707 + ... + 1235267.

It is an arithmetic number, because the mean of its divisors is an integer number (2545413780).

Almost surely, 2^20320131707 is an apocalyptic number.

20320131707 is a deficient number, since it is larger than the sum of its proper divisors (43178533).

20320131707 is a wasteful number, since it uses less digits than its factorization.

20320131707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19093.

The product of its (nonzero) digits is 1764, while the sum is 26.

The spelling of 20320131707 in words is "twenty billion, three hundred twenty million, one hundred thirty-one thousand, seven hundred seven".