705131 has 4 divisors (see below), whose sum is σ = 805872. Its totient is φ = 604392.

The previous prime is 705127. The next prime is 705137. The reversal of 705131 is 131507.

705131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 705131 - 2² = 705127 is a prime.

It is a super-2 number, since 2×705131² = 994419454322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (705137) 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, 50360 + ... + 50373.

It is an arithmetic number, because the mean of its divisors is an integer number (201468).

2⁷⁰⁵¹³¹ is an apocalyptic number.

705131 is a deficient number, since it is larger than the sum of its proper divisors (100741).

705131 is a wasteful number, since it uses less digits than its factorization.

705131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100740.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 705131 is about 839.7207869286. The cubic root of 705131 is about 89.0068167989.

Adding to 705131 its reverse (131507), we get a palindrome (836638).

The spelling of 705131 in words is "seven hundred five thousand, one hundred thirty-one".