131545134 has 56 divisors (see below), whose sum is σ = 338130480. Its totient is φ = 37581408.

The previous prime is 131545109. The next prime is 131545147. The reversal of 131545134 is 431545131.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 131545098 and 131545107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3762 + ... + 16650.

Almost surely, 2^131545134 is an apocalyptic number.

131545134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131545134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169065240).

131545134 is an abundant number, since it is smaller than the sum of its proper divisors (206585346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131545134 is an equidigital number, since it uses as much as digits as its factorization.

131545134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12916 (or 12901 counting only the distinct ones).

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

The square root of 131545134 is about 11469.3127082664. The cubic root of 131545134 is about 508.5788114982.

The spelling of 131545134 in words is "one hundred thirty-one million, five hundred forty-five thousand, one hundred thirty-four".