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120131223 = 340043741
BaseRepresentation
bin1110010100100…
…00111010010111
322101001022001120
413022100322113
5221223144343
615530455023
72656045542
oct712207227
9271038046
10120131223
11618a1403
1234294473
131bb71884
1411d51859
15a82e683
hex7290e97

120131223 has 4 divisors (see below), whose sum is σ = 160174968. Its totient is φ = 80087480.

The previous prime is 120131213. The next prime is 120131227. The reversal of 120131223 is 322131021.

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 120131223 - 26 = 120131159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120131227) 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, 20021868 + ... + 20021873.

It is an arithmetic number, because the mean of its divisors is an integer number (40043742).

Almost surely, 2120131223 is an apocalyptic number.

120131223 is a deficient number, since it is larger than the sum of its proper divisors (40043745).

120131223 is an equidigital number, since it uses as much as digits as its factorization.

120131223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40043744.

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

The square root of 120131223 is about 10960.4389966826. The cubic root of 120131223 is about 493.4221403411.

Adding to 120131223 its reverse (322131021), we get a palindrome (442262244).

The spelling of 120131223 in words is "one hundred twenty million, one hundred thirty-one thousand, two hundred twenty-three".

Divisors: 1 3 40043741 120131223