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2031201213 = 319415991451
BaseRepresentation
bin111100100010001…
…1010101110111101
312020120001201020120
41321010122232331
513124441414323
6533315405153
7101222632266
oct17104325675
95216051216
102031201213
11952618598
124882b37b9
13264a80012
14153a9b96d
15bd4c75e3
hex7911abbd

2031201213 has 32 divisors (see below), whose sum is σ = 2927232000. Its totient is φ = 1248624000.

The previous prime is 2031201197. The next prime is 2031201217. The reversal of 2031201213 is 3121021302.

It is not a de Polignac number, because 2031201213 - 24 = 2031201197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2031201192 and 2031201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031201217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1399138 + ... + 1400588.

It is an arithmetic number, because the mean of its divisors is an integer number (91476000).

Almost surely, 22031201213 is an apocalyptic number.

It is an amenable number.

2031201213 is a deficient number, since it is larger than the sum of its proper divisors (896030787).

2031201213 is a wasteful number, since it uses less digits than its factorization.

2031201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113.

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

The square root of 2031201213 is about 45068.8496968804. The cubic root of 2031201213 is about 1266.4391154104.

Adding to 2031201213 its reverse (3121021302), we get a palindrome (5152222515).

The spelling of 2031201213 in words is "two billion, thirty-one million, two hundred one thousand, two hundred thirteen".

Divisors: 1 3 19 41 57 123 599 779 1451 1797 2337 4353 11381 24559 27569 34143 59491 73677 82707 178473 466621 869149 1130329 1399863 2607447 3390987 16513831 35635109 49541493 106905327 677067071 2031201213