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3102220231 = 1117197271201
BaseRepresentation
bin1011100011101000…
…0001111111000111
322000012101010010121
42320322001333013
522323132021411
61231455202411
7136606302565
oct27072017707
98005333117
103102220231
111352138a80
12726b16407
133a5924796
14216014a35
15132536571
hexb8e81fc7

3102220231 has 32 divisors (see below), whose sum is σ = 3780241920. Its totient is φ = 2509056000.

The previous prime is 3102220211. The next prime is 3102220249. The reversal of 3102220231 is 1320222013.

It is not a de Polignac number, because 3102220231 - 213 = 3102212039 is a prime.

It is a super-2 number, since 2×31022202312 = 19247540723251386722, 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 (3102220211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2582431 + ... + 2583631.

It is an arithmetic number, because the mean of its divisors is an integer number (118132560).

Almost surely, 23102220231 is an apocalyptic number.

3102220231 is a deficient number, since it is larger than the sum of its proper divisors (678021689).

3102220231 is a wasteful number, since it uses less digits than its factorization.

3102220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3102220231 is about 55697.5783225806. The cubic root of 3102220231 is about 1458.4477514915.

Adding to 3102220231 its reverse (1320222013), we get a palindrome (4422442244).

The spelling of 3102220231 in words is "three billion, one hundred two million, two hundred twenty thousand, two hundred thirty-one".

Divisors: 1 11 17 19 187 209 323 727 1201 3553 7997 12359 13211 13813 20417 22819 135949 151943 224587 234821 251009 387923 873127 2583031 4267153 9604397 14843159 16589413 163274749 182483543 282020021 3102220231