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293081293 = 431680003
BaseRepresentation
bin10001011110000…
…001000011001101
3202102111001221201
4101132001003031
51100012100133
645025425501
710156102261
oct2136010315
9672431851
10293081293
1114048934a
128219b291
13489478ab
142acd20a1
151aae3d7d
hex117810cd

293081293 has 4 divisors (see below), whose sum is σ = 293761728. Its totient is φ = 292400860.

The previous prime is 293081291. The next prime is 293081323. The reversal of 293081293 is 392180392.

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 293081293 - 21 = 293081291 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (293081291) 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, 339571 + ... + 340432.

It is an arithmetic number, because the mean of its divisors is an integer number (73440432).

Almost surely, 2293081293 is an apocalyptic number.

It is an amenable number.

293081293 is a deficient number, since it is larger than the sum of its proper divisors (680435).

293081293 is an equidigital number, since it uses as much as digits as its factorization.

293081293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680434.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 293081293 is about 17119.6171978231. The cubic root of 293081293 is about 664.2466400308.

Subtracting 293081293 from its reverse (392180392), we obtain a palindrome (99099099).

The spelling of 293081293 in words is "two hundred ninety-three million, eighty-one thousand, two hundred ninety-three".

Divisors: 1 431 680003 293081293