131116545 has 24 divisors (see below), whose sum is σ = 259736256. Its totient is φ = 59938848.

The previous prime is 131116501. The next prime is 131116547. The reversal of 131116545 is 545611131.

131116545 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 1 + 654 + 5 = 666.

It is not a de Polignac number, because 131116545 - 2⁸ = 131116289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131116547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207807 + ... + 208436.

It is an arithmetic number, because the mean of its divisors is an integer number (10822344).

Almost surely, 2^131116545 is an apocalyptic number.

131116545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131116545 is a deficient number, since it is larger than the sum of its proper divisors (128619711).

131116545 is a wasteful number, since it uses less digits than its factorization.

131116545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416261 (or 416258 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 131116545 is about 11450.6133023520. The cubic root of 131116545 is about 508.0258746922.

Adding to 131116545 its reverse (545611131), we get a palindrome (676727676).

The spelling of 131116545 in words is "one hundred thirty-one million, one hundred sixteen thousand, five hundred forty-five".