131986545 has 16 divisors (see below), whose sum is σ = 212362560. Its totient is φ = 69998144.

The previous prime is 131986541. The next prime is 131986549. The reversal of 131986545 is 545689131.

It is an interprime number because it is at equal distance from previous prime (131986541) and next prime (131986549).

It is a cyclic number.

It is not a de Polignac number, because 131986545 - 2² = 131986541 is a prime.

It is a super-2 number, since 2×131986545² = 34840896122074050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131986497 and 131986506.

It is not an unprimeable number, because it can be changed into a prime (131986541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21894 + ... + 27263.

It is an arithmetic number, because the mean of its divisors is an integer number (13272660).

Almost surely, 2^131986545 is an apocalyptic number.

131986545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131986545 is a deficient number, since it is larger than the sum of its proper divisors (80376015).

131986545 is a wasteful number, since it uses less digits than its factorization.

131986545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49344.

The product of its digits is 129600, while the sum is 42.

The square root of 131986545 is about 11488.5397244384. The cubic root of 131986545 is about 509.1470363626.

The spelling of 131986545 in words is "one hundred thirty-one million, nine hundred eighty-six thousand, five hundred forty-five".