131534145 has 32 divisors (see below), whose sum is σ = 234316800. Its totient is φ = 70008192.

The previous prime is 131534113. The next prime is 131534173. The reversal of 131534145 is 541435131.

It is a happy number.

131534145 is a `hidden beast` number, since 1 + 315 + 341 + 4 + 5 = 666.

It is not a de Polignac number, because 131534145 - 2⁵ = 131534113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115941 + ... + 117069.

It is an arithmetic number, because the mean of its divisors is an integer number (7322400).

Almost surely, 2^131534145 is an apocalyptic number.

131534145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131534145 is a deficient number, since it is larger than the sum of its proper divisors (102782655).

131534145 is a wasteful number, since it uses less digits than its factorization.

131534145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006 (or 2000 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 131534145 is about 11468.8336372972. The cubic root of 131534145 is about 508.5646492407.

Adding to 131534145 its reverse (541435131), we get a palindrome (672969276).

The spelling of 131534145 in words is "one hundred thirty-one million, five hundred thirty-four thousand, one hundred forty-five".