132131261 has 4 divisors (see below), whose sum is σ = 132166812. Its totient is φ = 132095712.

The previous prime is 132131257. The next prime is 132131281. The reversal of 132131261 is 162131231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162131231 = 157 ⋅1032683.

It can be written as a sum of positive squares in 2 ways, for example, as 127825636 + 4305625 = 11306^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 132131261 - 2² = 132131257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132131201) 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, 11450 + ... + 19883.

It is an arithmetic number, because the mean of its divisors is an integer number (33041703).

Almost surely, 2^132131261 is an apocalyptic number.

It is an amenable number.

132131261 is a deficient number, since it is larger than the sum of its proper divisors (35551).

132131261 is an equidigital number, since it uses as much as digits as its factorization.

132131261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35550.

The product of its digits is 216, while the sum is 20.

The square root of 132131261 is about 11494.8362754760. The cubic root of 132131261 is about 509.3330523174. Note that the first 3 decimals are identical.

Adding to 132131261 its reverse (162131231), we get a palindrome (294262492).

The spelling of 132131261 in words is "one hundred thirty-two million, one hundred thirty-one thousand, two hundred sixty-one".