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200992431 = 3193526183
BaseRepresentation
bin10111111101011…
…10011010101111
3112000012110210010
423332232122233
5402423224211
631535544303
74660256523
oct1376563257
9460173703
10200992431
11a3500652
125738b093
1332843c43
141c99dd83
15129a34a6
hexbfae6af

200992431 has 8 divisors (see below), whose sum is σ = 282094720. Its totient is φ = 126942552.

The previous prime is 200992427. The next prime is 200992447. The reversal of 200992431 is 134299002.

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

It is not a de Polignac number, because 200992431 - 22 = 200992427 is a prime.

It is a super-2 number, since 2×2009924312 = 80795914638579522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200992531) 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, 1763035 + ... + 1763148.

It is an arithmetic number, because the mean of its divisors is an integer number (35261840).

Almost surely, 2200992431 is an apocalyptic number.

200992431 is a deficient number, since it is larger than the sum of its proper divisors (81102289).

200992431 is a wasteful number, since it uses less digits than its factorization.

200992431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526205.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 200992431 is about 14177.1799381965. The cubic root of 200992431 is about 585.7692473650.

The spelling of 200992431 in words is "two hundred million, nine hundred ninety-two thousand, four hundred thirty-one".

Divisors: 1 3 19 57 3526183 10578549 66997477 200992431