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2131233030 = 232523680367
BaseRepresentation
bin111111100001000…
…0000100100000110
312111112021212002200
41333002000210012
513331043424110
6551251415330
7103546116243
oct17702004406
95445255080
102131233030
119a4030a13
124b58b4546
1327c705144
1416309a5ca
15c71866c0
hex7f080906

2131233030 has 24 divisors (see below), whose sum is σ = 5541206112. Its totient is φ = 568328784.

The previous prime is 2131233023. The next prime is 2131233047. The reversal of 2131233030 is 303321312.

2131233030 is a `hidden beast` number, since 21 + 312 + 330 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2131232994 and 2131233012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11840094 + ... + 11840273.

It is an arithmetic number, because the mean of its divisors is an integer number (230883588).

Almost surely, 22131233030 is an apocalyptic number.

2131233030 is an abundant number, since it is smaller than the sum of its proper divisors (3409973082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131233030 is a wasteful number, since it uses less digits than its factorization.

2131233030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23680380 (or 23680377 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 2131233030 is about 46165.2794857781. The cubic root of 2131233030 is about 1286.8965781384.

Adding to 2131233030 its reverse (303321312), we get a palindrome (2434554342).

It can be divided in two parts, 213123 and 3030, that added together give a triangular number (216153 = T657).

The spelling of 2131233030 in words is "two billion, one hundred thirty-one million, two hundred thirty-three thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 23680367 47360734 71041101 118401835 142082202 213123303 236803670 355205505 426246606 710411010 1065616515 2131233030