1705161131 has 4 divisors (see below), whose sum is σ = 1705300632. Its totient is φ = 1705021632.

The previous prime is 1705161119. The next prime is 1705161163. The reversal of 1705161131 is 1311615071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311615071 = 13 ⋅100893467.

It is a cyclic number.

It is not a de Polignac number, because 1705161131 - 2⁶ = 1705161067 is a prime.

It is a super-2 number, since 2×1705161131² = 5815148965346398322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1705161131.

It is not an unprimeable number, because it can be changed into a prime (1705161181) 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, 49445 + ... + 76518.

It is an arithmetic number, because the mean of its divisors is an integer number (426325158).

Almost surely, 2^1705161131 is an apocalyptic number.

1705161131 is a deficient number, since it is larger than the sum of its proper divisors (139501).

1705161131 is a wasteful number, since it uses less digits than its factorization.

1705161131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139500.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 1705161131 is about 41293.5967312125. The cubic root of 1705161131 is about 1194.6897605618.

The spelling of 1705161131 in words is "one billion, seven hundred five million, one hundred sixty-one thousand, one hundred thirty-one".