131481071 has 4 divisors (see below), whose sum is σ = 131778312. Its totient is φ = 131183832.

The previous prime is 131481067. The next prime is 131481089. The reversal of 131481071 is 170184131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170184131 = 13 ⋅13091087.

It is a cyclic number.

It is not a de Polignac number, because 131481071 - 2² = 131481067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131481071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131486071) 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, 147956 + ... + 148841.

It is an arithmetic number, because the mean of its divisors is an integer number (32944578).

Almost surely, 2^131481071 is an apocalyptic number.

131481071 is a deficient number, since it is larger than the sum of its proper divisors (297241).

131481071 is an equidigital number, since it uses as much as digits as its factorization.

131481071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297240.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 131481071 is about 11466.5195678549. The cubic root of 131481071 is about 508.4962381287.

The spelling of 131481071 in words is "one hundred thirty-one million, four hundred eighty-one thousand, seventy-one".