Search a number
303042131 = 757775029
BaseRepresentation
bin10010000100000…
…000111001010011
3210010020010122122
4102010000321103
51110034322011
650023124455
710336546520
oct2204007123
9703203578
10303042131
11146072047
12855a372b
134aa24692
142c366147
151b9103db
hex12100e53

303042131 has 8 divisors (see below), whose sum is σ = 346938720. Its totient is φ = 259296768.

The previous prime is 303042121. The next prime is 303042133. The reversal of 303042131 is 131240303.

Adding to 303042131 its reverse (131240303), we get a palindrome (434282434).

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 303042131 - 214 = 303025747 is a prime.

It is a super-2 number, since 2×3030421312 = 183669066322042322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (303042133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33476 + ... + 41553.

It is an arithmetic number, because the mean of its divisors is an integer number (43367340).

Almost surely, 2303042131 is an apocalyptic number.

303042131 is a deficient number, since it is larger than the sum of its proper divisors (43896589).

303042131 is an equidigital number, since it uses as much as digits as its factorization.

303042131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75613.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 303042131 is about 17408.1053248192. The cubic root of 303042131 is about 671.6881251641.

The spelling of 303042131 in words is "three hundred three million, forty-two thousand, one hundred thirty-one".