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132211231 = 197671123
BaseRepresentation
bin1111110000101…
…10001000011111
3100012210000201021
413320112020133
5232321224411
621041425011
73163530325
oct770261037
9305700637
10132211231
11686a2289
123833b167
13215110c9
14137b7d15
15b918a71
hex7e1621f

132211231 has 4 divisors (see below), whose sum is σ = 132882552. Its totient is φ = 131539912.

The previous prime is 132211207. The next prime is 132211241. The reversal of 132211231 is 132112231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132112231 = 307430333.

It is a cyclic number.

It is not a de Polignac number, because 132211231 - 29 = 132210719 is a prime.

It is a super-2 number, since 2×1322112312 = 34959619205070722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132211241) 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, 335365 + ... + 335758.

It is an arithmetic number, because the mean of its divisors is an integer number (33220638).

Almost surely, 2132211231 is an apocalyptic number.

132211231 is a deficient number, since it is larger than the sum of its proper divisors (671321).

132211231 is an equidigital number, since it uses as much as digits as its factorization.

132211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671320.

The product of its digits is 72, while the sum is 16.

The square root of 132211231 is about 11498.3142677525. The cubic root of 132211231 is about 509.4357863950.

Adding to 132211231 its reverse (132112231), we get a palindrome (264323462).

The spelling of 132211231 in words is "one hundred thirty-two million, two hundred eleven thousand, two hundred thirty-one".

Divisors: 1 197 671123 132211231