132120231 has 4 divisors (see below), whose sum is σ = 176160312. Its totient is φ = 88080152.

The previous prime is 132120223. The next prime is 132120251. The reversal of 132120231 is 132021231.

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

It is a cyclic number.

It is not a de Polignac number, because 132120231 - 2³ = 132120223 is a prime.

It is a super-2 number, since 2×132120231² = 34911510878986722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 132120231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132120251) 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, 22020036 + ... + 22020041.

It is an arithmetic number, because the mean of its divisors is an integer number (44040078).

Almost surely, 2^132120231 is an apocalyptic number.

132120231 is a deficient number, since it is larger than the sum of its proper divisors (44040081).

132120231 is an equidigital number, since it uses as much as digits as its factorization.

132120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44040080.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 132120231 is about 11494.3564848146. The cubic root of 132120231 is about 509.3188792901.

Adding to 132120231 its reverse (132021231), we get a palindrome (264141462).

The spelling of 132120231 in words is "one hundred thirty-two million, one hundred twenty thousand, two hundred thirty-one".