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213143031204 = 22371250167877
BaseRepresentation
bin1100011010000001010…
…0001000110110100100
3202101011022012211212220
43012200110020312210
511443004103444304
6241525550512340
721253611605145
oct3064024106644
9671138184786
10213143031204
1182436759064
12353852056b0
131713a21cb0c
14a45d83dacc
15582722aad9
hex31a0508da4

213143031204 has 24 divisors (see below), whose sum is σ = 504338442048. Its totient is φ = 70047005280.

The previous prime is 213143031089. The next prime is 213143031259. The reversal of 213143031204 is 402130341312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125083087 + ... + 125084790.

It is an arithmetic number, because the mean of its divisors is an integer number (21014101752).

Almost surely, 2213143031204 is an apocalyptic number.

It is an amenable number.

213143031204 is an abundant number, since it is smaller than the sum of its proper divisors (291195410844).

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

213143031204 is a wasteful number, since it uses less digits than its factorization.

213143031204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250167955 (or 250167953 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 213143031204 its reverse (402130341312), we get a palindrome (615273372516).

The spelling of 213143031204 in words is "two hundred thirteen billion, one hundred forty-three million, thirty-one thousand, two hundred four".

Divisors: 1 2 3 4 6 12 71 142 213 284 426 852 250167877 500335754 750503631 1000671508 1501007262 3002014524 17761919267 35523838534 53285757801 71047677068 106571515602 213143031204