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4021310131 = 4918190041
BaseRepresentation
bin1110111110110000…
…0101001010110011
3101101020210201110021
43233230011022303
531213423411011
61503010344311
7201436400146
oct35754051263
911336721407
104021310131
111783a19903
1294288b097
134c1173267
142a210005d
15188084471
hexefb052b3

4021310131 has 4 divisors (see below), whose sum is σ = 4029500664. Its totient is φ = 4013119600.

The previous prime is 4021310113. The next prime is 4021310147. The reversal of 4021310131 is 1310131204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4021310131 - 29 = 4021309619 is a prime.

It is a super-2 number, since 2×40213101312 = 32341870339366474322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021310231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094530 + ... + 4095511.

It is an arithmetic number, because the mean of its divisors is an integer number (1007375166).

Almost surely, 24021310131 is an apocalyptic number.

4021310131 is a deficient number, since it is larger than the sum of its proper divisors (8190533).

4021310131 is an equidigital number, since it uses as much as digits as its factorization.

4021310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190532.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 4021310131 is about 63413.8007928873. The cubic root of 4021310131 is about 1590.2150376989.

Adding to 4021310131 its reverse (1310131204), we get a palindrome (5331441335).

The spelling of 4021310131 in words is "four billion, twenty-one million, three hundred ten thousand, one hundred thirty-one".

Divisors: 1 491 8190041 4021310131