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230493137 = 732927591
BaseRepresentation
bin11011011110100…
…00101111010001
3121001201021010212
431233100233101
5433001240022
634512133505
75466105440
oct1557205721
9531637125
10230493137
1110911a9a6
1265237295
13389a2894
142287cd57
151537e3e2
hexdbd0bd1

230493137 has 4 divisors (see below), whose sum is σ = 263420736. Its totient is φ = 197565540.

The previous prime is 230493127. The next prime is 230493163. The reversal of 230493137 is 731394032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230493137 - 24 = 230493121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230493127) 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, 16463789 + ... + 16463802.

It is an arithmetic number, because the mean of its divisors is an integer number (65855184).

Almost surely, 2230493137 is an apocalyptic number.

It is an amenable number.

230493137 is a deficient number, since it is larger than the sum of its proper divisors (32927599).

230493137 is an equidigital number, since it uses as much as digits as its factorization.

230493137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32927598.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 230493137 is about 15182.0004281386. Note that the first 3 decimals coincide. The cubic root of 230493137 is about 613.1301409920.

The spelling of 230493137 in words is "two hundred thirty million, four hundred ninety-three thousand, one hundred thirty-seven".

Divisors: 1 7 32927591 230493137