101731580345 has 4 divisors (see below), whose sum is σ = 122077896420. Its totient is φ = 81385264272.

The previous prime is 101731580333. The next prime is 101731580369. The reversal of 101731580345 is 543085137101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77838768016 + 23892812329 = 278996^2 + 154573^2 .

It is a cyclic number.

It is not a de Polignac number, because 101731580345 - 2⁸ = 101731580089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101731580299 and 101731580308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10173158030 + ... + 10173158039.

It is an arithmetic number, because the mean of its divisors is an integer number (30519474105).

Almost surely, 2^101731580345 is an apocalyptic number.

It is an amenable number.

101731580345 is a deficient number, since it is larger than the sum of its proper divisors (20346316075).

101731580345 is an equidigital number, since it uses as much as digits as its factorization.

101731580345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20346316074.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 101731580345 in words is "one hundred one billion, seven hundred thirty-one million, five hundred eighty thousand, three hundred forty-five".