131481 has 12 divisors (see below), whose sum is σ = 217152. Its totient is φ = 75096.

The previous prime is 131479. The next prime is 131489. The reversal of 131481 is 184131.

It is not a de Polignac number, because 131481 - 2¹ = 131479 is a prime.

It is a super-2 number, since 2×131481² = 34574506722, which contains 22 as substring.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131481.

It is not an unprimeable number, because it can be changed into a prime (131489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 981 + ... + 1106.

It is an arithmetic number, because the mean of its divisors is an integer number (18096).

2¹³¹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

131481 is a deficient number, since it is larger than the sum of its proper divisors (85671).

131481 is a wasteful number, since it uses less digits than its factorization.

131481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2097 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 131481 is about 362.6030887899. The cubic root of 131481 is about 50.8496146599.

Subtracting 131481 from its reverse (184131), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 131481 in words is "one hundred thirty-one thousand, four hundred eighty-one".