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232430131 = 991234541
BaseRepresentation
bin11011101101010…
…01101000110011
3121012100200012101
431312221220303
5434000231011
635021441231
75521423603
oct1566515063
9535320171
10232430131
1110a22321a
1265a10217
133920042b
1422c24c03
15156132c1
hexdda9a33

232430131 has 4 divisors (see below), whose sum is σ = 232665664. Its totient is φ = 232194600.

The previous prime is 232430119. The next prime is 232430147. The reversal of 232430131 is 131034232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232430131 - 213 = 232421939 is a prime.

It is a super-2 number, since 2×2324301312 = 108047531593354322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232430099 and 232430108.

It is not an unprimeable number, because it can be changed into a prime (232430431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116280 + ... + 118261.

It is an arithmetic number, because the mean of its divisors is an integer number (58166416).

Almost surely, 2232430131 is an apocalyptic number.

232430131 is a deficient number, since it is larger than the sum of its proper divisors (235533).

232430131 is an equidigital number, since it uses as much as digits as its factorization.

232430131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235532.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 232430131 is about 15245.6594150598. The cubic root of 232430131 is about 614.8428717052.

Adding to 232430131 its reverse (131034232), we get a palindrome (363464363).

The spelling of 232430131 in words is "two hundred thirty-two million, four hundred thirty thousand, one hundred thirty-one".

Divisors: 1 991 234541 232430131