132347281 has 4 divisors (see below), whose sum is σ = 144378864. Its totient is φ = 120315700.

The previous prime is 132347279. The next prime is 132347287. The reversal of 132347281 is 182743231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182743231 = 11 ⋅16613021.

It is a cyclic number.

It is not a de Polignac number, because 132347281 - 2¹ = 132347279 is a prime.

It is a super-2 number, since 2×132347281² = 35031605576185922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132347287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6015775 + ... + 6015796.

It is an arithmetic number, because the mean of its divisors is an integer number (36094716).

Almost surely, 2^132347281 is an apocalyptic number.

132347281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

132347281 is a deficient number, since it is larger than the sum of its proper divisors (12031583).

132347281 is a wasteful number, since it uses less digits than its factorization.

132347281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12031582.

The product of its digits is 8064, while the sum is 31.

The square root of 132347281 is about 11504.2288311733. The cubic root of 132347281 is about 509.6104689291.

The spelling of 132347281 in words is "one hundred thirty-two million, three hundred forty-seven thousand, two hundred eighty-one".