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2255213631 = 31189767863
BaseRepresentation
bin1000011001101011…
…1101010000111111
312211011120201111210
42012122331100333
514104313314011
61011441015503
7106612666566
oct20632752077
95734521453
102255213631
11a58011420
1252b324593
1329c2c3b48
14175730bdd
15d2ec66a6
hex866bd43f

2255213631 has 16 divisors (see below), whose sum is σ = 3317172480. Its totient is φ = 1351437120.

The previous prime is 2255213627. The next prime is 2255213633. The reversal of 2255213631 is 1363125522.

It is not a de Polignac number, because 2255213631 - 22 = 2255213627 is a prime.

It is a super-2 number, since 2×22552136312 = 10171977042896408322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255213633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380995 + ... + 386868.

It is an arithmetic number, because the mean of its divisors is an integer number (207323280).

Almost surely, 22255213631 is an apocalyptic number.

2255213631 is a deficient number, since it is larger than the sum of its proper divisors (1061958849).

2255213631 is a wasteful number, since it uses less digits than its factorization.

2255213631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767966.

The product of its digits is 10800, while the sum is 30.

The square root of 2255213631 is about 47489.0895996122. The cubic root of 2255213631 is about 1311.3820332920.

The spelling of 2255213631 in words is "two billion, two hundred fifty-five million, two hundred thirteen thousand, six hundred thirty-one".

Divisors: 1 3 11 33 89 267 979 2937 767863 2303589 8446493 25339479 68339807 205019421 751737877 2255213631