3161731773049 has 4 divisors (see below), whose sum is σ = 3161737054564. Its totient is φ = 3161726491536.

The previous prime is 3161731773041. The next prime is 3161731773061. The reversal of 3161731773049 is 9403771371613.

It is a happy number.

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 2041775214649 + 1119956558400 = 1428907^2 + 1058280^2 .

It is a cyclic number.

It is not a de Polignac number, because 3161731773049 - 2³ = 3161731773041 is a prime.

It is a super-3 number, since 3×3161731773049³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3161731772987 and 3161731773005.

It is not an unprimeable number, because it can be changed into a prime (3161731773041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608222 + ... + 2984935.

It is an arithmetic number, because the mean of its divisors is an integer number (790434263641).

Almost surely, 2^{3161731773049} is an apocalyptic number.

It is an amenable number.

3161731773049 is a deficient number, since it is larger than the sum of its proper divisors (5281515).

3161731773049 is an equidigital number, since it uses as much as digits as its factorization.

3161731773049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281514.

The product of its (nonzero) digits is 2000376, while the sum is 52.

The spelling of 3161731773049 in words is "three trillion, one hundred sixty-one billion, seven hundred thirty-one million, seven hundred seventy-three thousand, forty-nine".