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23313132031 = 7191674632267
BaseRepresentation
bin10101101101100100…
…100010100111111111
32020011201202210222111
4111231210202213333
5340221130211111
614413201154451
71453502231650
oct255544424777
966151683874
1023313132031
119983723172
12462762ba27
132276c072a7
1411b231d527
15916a64a21
hex56d9229ff

23313132031 has 32 divisors (see below), whose sum is σ = 28287221760. Its totient is φ = 18768679776.

The previous prime is 23313132001. The next prime is 23313132067. The reversal of 23313132031 is 13023131332.

It is not a de Polignac number, because 23313132031 - 213 = 23313123839 is a prime.

It is a super-2 number, since 2×233131320312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23313131993 and 23313132011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23313132001) 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, 10282560 + ... + 10284826.

It is an arithmetic number, because the mean of its divisors is an integer number (883975680).

Almost surely, 223313132031 is an apocalyptic number.

23313132031 is a deficient number, since it is larger than the sum of its proper divisors (4974089729).

23313132031 is a wasteful number, since it uses less digits than its factorization.

23313132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 23313132031 its reverse (13023131332), we get a palindrome (36336263363).

The spelling of 23313132031 in words is "twenty-three billion, three hundred thirteen million, one hundred thirty-two thousand, thirty-one".

Divisors: 1 7 19 133 167 463 1169 2267 3173 3241 8797 15869 22211 43073 61579 77321 301511 378589 541247 1049621 1469099 2650123 7193191 7347347 10283693 19942799 50352337 139599593 175286707 1227006949 3330447433 23313132031