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120033031213 = 278581430873
BaseRepresentation
bin110111111001010000…
…1101011010000101101
3102110211022022202210201
41233302201223100231
53431311423444323
6131050432233501
711446346634214
oct1576241532055
9373738282721
10120033031213
11469a6575a47
121b31a99b891
13b41bcb0c74
145b498a407b
1531c7d2c8ad
hex1bf286b42d

120033031213 has 4 divisors (see below), whose sum is σ = 120033740668. Its totient is φ = 120032321760.

The previous prime is 120033031201. The next prime is 120033031229. The reversal of 120033031213 is 312130330021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 312130330021 = 2750031135007.

It can be written as a sum of positive squares in 2 ways, for example, as 60163750089 + 59869281124 = 245283^2 + 244682^2 .

It is a cyclic number.

It is not a de Polignac number, because 120033031213 - 221 = 120030934061 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 (120033031273) 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, 63145 + ... + 494017.

It is an arithmetic number, because the mean of its divisors is an integer number (30008435167).

Almost surely, 2120033031213 is an apocalyptic number.

It is an amenable number.

120033031213 is a deficient number, since it is larger than the sum of its proper divisors (709455).

120033031213 is an equidigital number, since it uses as much as digits as its factorization.

120033031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709454.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 120033031213 its reverse (312130330021), we get a palindrome (432163361234).

The spelling of 120033031213 in words is "one hundred twenty billion, thirty-three million, thirty-one thousand, two hundred thirteen".

Divisors: 1 278581 430873 120033031213