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513131 is a prime number
BaseRepresentation
bin1111101010001101011
3222001212212
41331101223
5112410011
614555335
74235003
oct1752153
9861785
10513131
11320583
12208b4b
1314c738
14d5003
15a208b
hex7d46b

513131 has 2 divisors, whose sum is σ = 513132. Its totient is φ = 513130.

The previous prime is 513109. The next prime is 513137. The reversal of 513131 is 131315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513131 - 26 = 513067 is a prime.

It is a super-2 number, since 2×5131312 = 526606846322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (513137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256565 + 256566.

It is an arithmetic number, because the mean of its divisors is an integer number (256566).

2513131 is an apocalyptic number.

513131 is a deficient number, since it is larger than the sum of its proper divisors (1).

513131 is an equidigital number, since it uses as much as digits as its factorization.

513131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45, while the sum is 14.

The square root of 513131 is about 716.3316271114. The cubic root of 513131 is about 80.0588629288.

Adding to 513131 its reverse (131315), we get a palindrome (644446).

The spelling of 513131 in words is "five hundred thirteen thousand, one hundred thirty-one".