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311053223 = 1329698059
BaseRepresentation
bin10010100010100…
…100101110100111
3210200022010210202
4102202210232213
51114112200343
650510541115
710464623465
oct2242445647
9720263722
10311053223
1114a643988
128820779b
134c59ab80
142d44d835
151c493db8
hex128a4ba7

311053223 has 8 divisors (see below), whose sum is σ = 335134800. Its totient is φ = 286993728.

The previous prime is 311053187. The next prime is 311053243. The reversal of 311053223 is 322350113.

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 311053223 - 218 = 310791079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311053195 and 311053204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311053243) 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, 34568 + ... + 42626.

It is an arithmetic number, because the mean of its divisors is an integer number (41891850).

Almost surely, 2311053223 is an apocalyptic number.

311053223 is a deficient number, since it is larger than the sum of its proper divisors (24081577).

311053223 is a wasteful number, since it uses less digits than its factorization.

311053223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11041.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 311053223 is about 17636.7010237176. The cubic root of 311053223 is about 677.5555419850. Note that the first 4 decimals are identical.

The spelling of 311053223 in words is "three hundred eleven million, fifty-three thousand, two hundred twenty-three".

Divisors: 1 13 2969 8059 38597 104767 23927171 311053223