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120133213 = 252147653
BaseRepresentation
bin1110010100100…
…01011001011101
322101001101210021
413022101121131
5221223230323
615530512141
72656054414
oct712213135
9271041707
10120133213
11618a2952
1234295651
131bb72755
1411d5247b
15a83005d
hex729165d

120133213 has 4 divisors (see below), whose sum is σ = 120183388. Its totient is φ = 120083040.

The previous prime is 120133193. The next prime is 120133231. The reversal of 120133213 is 312331021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 108722329 = 3378^2 + 10427^2 .

It is a cyclic number.

It is not a de Polignac number, because 120133213 - 225 = 86578781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120133513) 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, 21306 + ... + 26347.

It is an arithmetic number, because the mean of its divisors is an integer number (30045847).

Almost surely, 2120133213 is an apocalyptic number.

It is an amenable number.

120133213 is a deficient number, since it is larger than the sum of its proper divisors (50175).

120133213 is an equidigital number, since it uses as much as digits as its factorization.

120133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50174.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 120133213 is about 10960.5297773420. The cubic root of 120133213 is about 493.4248648747.

Adding to 120133213 its reverse (312331021), we get a palindrome (432464234).

The spelling of 120133213 in words is "one hundred twenty million, one hundred thirty-three thousand, two hundred thirteen".

Divisors: 1 2521 47653 120133213