3161731061 has 4 divisors (see below), whose sum is σ = 3270756300. Its totient is φ = 3052705824.

The previous prime is 3161731039. The next prime is 3161731103. The reversal of 3161731061 is 1601371613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1601371613 = 839 ⋅1908667.

It can be written as a sum of positive squares in 2 ways, for example, as 678602500 + 2483128561 = 26050^2 + 49831^2 .

It is a cyclic number.

It is not a de Polignac number, because 3161731061 - 2¹⁸ = 3161468917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 109025209 = 3161731061 / (3 + 1 + 6 + 1 + 7 + 3 + 1 + 0 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161731021) 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, 54512576 + ... + 54512633.

It is an arithmetic number, because the mean of its divisors is an integer number (817689075).

Almost surely, 2^3161731061 is an apocalyptic number.

It is an amenable number.

3161731061 is a deficient number, since it is larger than the sum of its proper divisors (109025239).

3161731061 is a wasteful number, since it uses less digits than its factorization.

3161731061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109025238.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 3161731061 is about 56229.2722787695. The cubic root of 3161731061 is about 1467.7146931291.

The spelling of 3161731061 in words is "three billion, one hundred sixty-one million, seven hundred thirty-one thousand, sixty-one".