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3142330221 = 33143785779
BaseRepresentation
bin1011101101001100…
…0010011101101101
322002222211220200210
42323103002131231
522413414031341
61235451013033
7140604236412
oct27323023555
98088756623
103142330221
111372844228
1273843a179
133b10293c4
1421b496109
15135d0ac16
hexbb4c276d

3142330221 has 16 divisors (see below), whose sum is σ = 4425512960. Its totient is φ = 1980160560.

The previous prime is 3142330211. The next prime is 3142330223. The reversal of 3142330221 is 1220332413.

It is not a de Polignac number, because 3142330221 - 26 = 3142330157 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 (3142330223) 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, 388891 + ... + 396888.

It is an arithmetic number, because the mean of its divisors is an integer number (276594560).

Almost surely, 23142330221 is an apocalyptic number.

3142330221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3142330221 is a deficient number, since it is larger than the sum of its proper divisors (1283182739).

3142330221 is a wasteful number, since it uses less digits than its factorization.

3142330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785856.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3142330221 is about 56056.4913368648. The cubic root of 3142330221 is about 1464.7064951123.

Adding to 3142330221 its reverse (1220332413), we get a palindrome (4362662634).

The spelling of 3142330221 in words is "three billion, one hundred forty-two million, three hundred thirty thousand, two hundred twenty-one".

Divisors: 1 3 31 43 93 129 1333 3999 785779 2357337 24359149 33788497 73077447 101365491 1047443407 3142330221