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122413231 = 234152291
BaseRepresentation
bin1110100101111…
…10000010101111
322112100020101101
413102332002233
5222314210411
620051423531
73014331613
oct722760257
9275306341
10122413231
116310a966
1234bb4ba7
131c490485
1412387343
15ab308c1
hex74be0af

122413231 has 4 divisors (see below), whose sum is σ = 122467864. Its totient is φ = 122358600.

The previous prime is 122413229. The next prime is 122413261. The reversal of 122413231 is 132314221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132314221 = 1310178017.

It is a cyclic number.

It is not a de Polignac number, because 122413231 - 21 = 122413229 is a prime.

It is a super-2 number, since 2×1224132312 = 29969998247718722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122413199 and 122413208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122413211) 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, 23805 + ... + 28486.

It is an arithmetic number, because the mean of its divisors is an integer number (30616966).

Almost surely, 2122413231 is an apocalyptic number.

122413231 is a deficient number, since it is larger than the sum of its proper divisors (54633).

122413231 is an equidigital number, since it uses as much as digits as its factorization.

122413231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54632.

The product of its digits is 288, while the sum is 19.

The square root of 122413231 is about 11064.0512923612. The cubic root of 122413231 is about 496.5269057578.

Adding to 122413231 its reverse (132314221), we get a palindrome (254727452).

The spelling of 122413231 in words is "one hundred twenty-two million, four hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 2341 52291 122413231