131493 has 8 divisors (see below), whose sum is σ = 178848. Its totient is φ = 85904.

The previous prime is 131489. The next prime is 131497. The reversal of 131493 is 394131.

It is an interprime number because it is at equal distance from previous prime (131489) and next prime (131497).

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

It is a cyclic number.

It is not a de Polignac number, because 131493 - 2² = 131489 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131497) 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, 255 + ... + 572.

It is an arithmetic number, because the mean of its divisors is an integer number (22356).

2¹³¹⁴⁹³ is an apocalyptic number.

It is an amenable number.

131493 is a deficient number, since it is larger than the sum of its proper divisors (47355).

131493 is an equidigital number, since it uses as much as digits as its factorization.

131493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883.

The product of its digits is 324, while the sum is 21.

The square root of 131493 is about 362.6196354308. The cubic root of 131493 is about 50.8511615927.

The spelling of 131493 in words is "one hundred thirty-one thousand, four hundred ninety-three".