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23430313231 = 1310039179533
BaseRepresentation
bin10101110100100011…
…100011010100001111
32020110220021020100221
4111310203203110033
5340441130010411
614432544532211
71456424243053
oct256443432417
966426236327
1023430313231
119a3388a136
12465a921067
132295285190
1411c3b03c63
15921eb0071
hex5748e350f

23430313231 has 8 divisors (see below), whose sum is σ = 25235299040. Its totient is φ = 21625706592.

The previous prime is 23430313229. The next prime is 23430313271. The reversal of 23430313231 is 13231303432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23430313231 - 21 = 23430313229 is a prime.

It is a super-2 number, since 2×234303132312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23430313196 and 23430313205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23430313271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40741 + ... + 220273.

It is an arithmetic number, because the mean of its divisors is an integer number (3154412380).

Almost surely, 223430313231 is an apocalyptic number.

23430313231 is a deficient number, since it is larger than the sum of its proper divisors (1804985809).

23430313231 is a wasteful number, since it uses less digits than its factorization.

23430313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189585.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 23430313231 its reverse (13231303432), we get a palindrome (36661616663).

The spelling of 23430313231 in words is "twenty-three billion, four hundred thirty million, three hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 13 10039 130507 179533 2333929 1802331787 23430313231