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233012131 = 1161677173
BaseRepresentation
bin11011110001101…
…11101110100011
3121020110020112221
431320313232203
5434122342011
635042131511
75526366442
oct1570675643
9536406487
10233012131
1110a590510
1266050b97
1339375301
1422d36d59
15156ca971
hexde37ba3

233012131 has 32 divisors (see below), whose sum is σ = 269554176. Its totient is φ = 199584000.

The previous prime is 233012119. The next prime is 233012137. The reversal of 233012131 is 131210332.

It is not a de Polignac number, because 233012131 - 29 = 233011619 is a prime.

It is a super-3 number, since 3×2330121313 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233012137) 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, 3191911 + ... + 3191983.

It is an arithmetic number, because the mean of its divisors is an integer number (8423568).

Almost surely, 2233012131 is an apocalyptic number.

233012131 is a deficient number, since it is larger than the sum of its proper divisors (36542045).

233012131 is a wasteful number, since it uses less digits than its factorization.

233012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

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

The square root of 233012131 is about 15264.7348814187. The cubic root of 233012131 is about 615.3556283650.

Adding to 233012131 its reverse (131210332), we get a palindrome (364222463).

The spelling of 233012131 in words is "two hundred thirty-three million, twelve thousand, one hundred thirty-one".

Divisors: 1 11 61 67 71 73 671 737 781 803 4087 4331 4453 4757 4891 5183 44957 47641 48983 52327 53801 57013 290177 298351 316163 347261 3191947 3281861 3477793 3819871 21182921 233012131