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2023031231 = 13227914289
BaseRepresentation
bin111100010010101…
…0000000110111111
312012222200122010122
41320211100012333
513120343444411
6532424325155
7101063324144
oct17045200677
95188618118
102023031231
11948a48341
124856137bb
1326317c400
141529723cb
15bc9119db
hex789501bf

2023031231 has 12 divisors (see below), whose sum is σ = 2191915440. Its totient is φ = 1866309120.

The previous prime is 2023031173. The next prime is 2023031243. The reversal of 2023031231 is 1321303202.

It is not a de Polignac number, because 2023031231 - 222 = 2018836927 is a prime.

It is a super-2 number, since 2×20230312312 = 8185310723202750722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023031291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469535 + ... + 473823.

It is an arithmetic number, because the mean of its divisors is an integer number (182659620).

Almost surely, 22023031231 is an apocalyptic number.

2023031231 is a deficient number, since it is larger than the sum of its proper divisors (168884209).

2023031231 is a wasteful number, since it uses less digits than its factorization.

2023031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7106 (or 7093 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2023031231 is about 44978.1194693598. The cubic root of 2023031231 is about 1264.7388590603.

Adding to 2023031231 its reverse (1321303202), we get a palindrome (3344334433).

The spelling of 2023031231 in words is "two billion, twenty-three million, thirty-one thousand, two hundred thirty-one".

Divisors: 1 13 169 2791 4289 36283 55757 471679 724841 11970599 155617787 2023031231