132228531 has 30 divisors (see below), whose sum is σ = 202091780. Its totient is φ = 86160024.

The previous prime is 132228527. The next prime is 132228559. The reversal of 132228531 is 135822231.

It is not a de Polignac number, because 132228531 - 2² = 132228527 is a prime.

It is a super-2 number, since 2×132228531² = 34968768820835922, which contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132228495 and 132228504.

It is not an unprimeable number, because it can be changed into a prime (132228511) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 178560 + ... + 179298.

Almost surely, 2^132228531 is an apocalyptic number.

132228531 is a deficient number, since it is larger than the sum of its proper divisors (69863249).

132228531 is an frugal number, since it uses more digits than its factorization.

132228531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 789 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 132228531 is about 11499.0665273317. The cubic root of 132228531 is about 509.4580055228.

The spelling of 132228531 in words is "one hundred thirty-two million, two hundred twenty-eight thousand, five hundred thirty-one".