718131 has 8 divisors (see below), whose sum is σ = 1013904. Its totient is φ = 450560.

The previous prime is 718121. The next prime is 718139. The reversal of 718131 is 131817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718131 is a prime.

It is a super-2 number, since 2×718131² = 1031424266322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 718098 and 718107.

It is not an unprimeable number, because it can be changed into a prime (718139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6990 + ... + 7091.

It is an arithmetic number, because the mean of its divisors is an integer number (126738).

2⁷¹⁸¹³¹ is an apocalyptic number.

718131 is a deficient number, since it is larger than the sum of its proper divisors (295773).

718131 is a wasteful number, since it uses less digits than its factorization.

718131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14101.

The product of its digits is 168, while the sum is 21.

The square root of 718131 is about 847.4261029730. The cubic root of 718131 is about 89.5504745303.

Adding to 718131 its reverse (131817), we get a palindrome (849948).

The spelling of 718131 in words is "seven hundred eighteen thousand, one hundred thirty-one".