131706547 has 4 divisors (see below), whose sum is σ = 150521776. Its totient is φ = 112891320.

The previous prime is 131706541. The next prime is 131706557. The reversal of 131706547 is 745607131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131706547 is a prime.

It is a super-2 number, since 2×131706547² = 34693229045326418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131706541) 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, 9407604 + ... + 9407617.

It is an arithmetic number, because the mean of its divisors is an integer number (37630444).

Almost surely, 2^131706547 is an apocalyptic number.

131706547 is a deficient number, since it is larger than the sum of its proper divisors (18815229).

131706547 is an equidigital number, since it uses as much as digits as its factorization.

131706547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18815228.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 131706547 is about 11476.3472847418. The cubic root of 131706547 is about 508.7867443835.

The spelling of 131706547 in words is "one hundred thirty-one million, seven hundred six thousand, five hundred forty-seven".