134431505 has 16 divisors (see below), whose sum is σ = 175455504. Its totient is φ = 98284800.

The previous prime is 134431489. The next prime is 134431511. The reversal of 134431505 is 505134431.

It can be written as a sum of positive squares in 8 ways, for example, as 4289041 + 130142464 = 2071^2 + 11408^2 .

It is not a de Polignac number, because 134431505 - 2⁴ = 134431489 is a prime.

It is a super-3 number, since 3×134431505³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3674 + ... + 16803.

It is an arithmetic number, because the mean of its divisors is an integer number (10965969).

Almost surely, 2^134431505 is an apocalyptic number.

It is an amenable number.

134431505 is a deficient number, since it is larger than the sum of its proper divisors (41023999).

134431505 is a wasteful number, since it uses less digits than its factorization.

134431505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20596.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 134431505 is about 11594.4600995475. The cubic root of 134431505 is about 512.2716873190.

Adding to 134431505 its reverse (505134431), we get a palindrome (639565936).

The spelling of 134431505 in words is "one hundred thirty-four million, four hundred thirty-one thousand, five hundred five".