131698 has 16 divisors (see below), whose sum is σ = 236160. Its totient is φ = 53856.

The previous prime is 131687. The next prime is 131701. The reversal of 131698 is 896131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (14760).

2¹³¹⁶⁹⁸ is an apocalyptic number.

131698 is a deficient number, since it is larger than the sum of its proper divisors (104462).

131698 is a wasteful number, since it uses less digits than its factorization.

131698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441.

The product of its digits is 1296, while the sum is 28.

The square root of 131698 is about 362.9021906795. The cubic root of 131698 is about 50.8775738364.

It can be divided in two parts, 13 and 1698, that added together give a triangular number (1711 = T₅₈).

The spelling of 131698 in words is "one hundred thirty-one thousand, six hundred ninety-eight".