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BaseRepresentation
bin10010000000000…
…101101011001011
3210001021212010112
4102000011223023
51104303410011
645545104535
710325032520
oct2200055313
9701255115
10302013131
11145529a32
128518814b
134a7541c4
142c179147
151b7aa58b
hex12005acb

302013131 has 4 divisors (see below), whose sum is σ = 345157872. Its totient is φ = 258868392.

The previous prime is 302013091. The next prime is 302013139. The reversal of 302013131 is 131310203.

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 302013131 - 218 = 301750987 is a prime.

It is a super-2 number, since 2×3020131312 = 182423862592846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (302013139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21572360 + ... + 21572373.

It is an arithmetic number, because the mean of its divisors is an integer number (86289468).

Almost surely, 2302013131 is an apocalyptic number.

302013131 is a deficient number, since it is larger than the sum of its proper divisors (43144741).

302013131 is an equidigital number, since it uses as much as digits as its factorization.

302013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43144740.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 302013131 is about 17378.5249949471. The cubic root of 302013131 is about 670.9270089247.

Adding to 302013131 its reverse (131310203), we get a palindrome (433323334).

The spelling of 302013131 in words is "three hundred two million, thirteen thousand, one hundred thirty-one".

Divisors: 1 7 43144733 302013131