131520134 has 4 divisors (see below), whose sum is σ = 197280204. Its totient is φ = 65760066.

The previous prime is 131520127. The next prime is 131520149. The reversal of 131520134 is 431025131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32880032 + ... + 32880035.

It is an arithmetic number, because the mean of its divisors is an integer number (49320051).

Almost surely, 2^131520134 is an apocalyptic number.

131520134 is a deficient number, since it is larger than the sum of its proper divisors (65760070).

131520134 is an equidigital number, since it uses as much as digits as its factorization.

131520134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65760069.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 131520134 is about 11468.2227916971. Note that the first 3 decimals coincide. The cubic root of 131520134 is about 508.5465911861.

Adding to 131520134 its reverse (431025131), we get a palindrome (562545265).

The spelling of 131520134 in words is "one hundred thirty-one million, five hundred twenty thousand, one hundred thirty-four".