305136513 has 12 divisors (see below), whose sum is σ = 480821328. Its totient is φ = 184931160.

The previous prime is 305136511. The next prime is 305136547. The reversal of 305136513 is 315631503.

305136513 is a `hidden beast` number, since 3 + 0 + 5 + 1 + 3 + 651 + 3 = 666.

It is not a de Polignac number, because 305136513 - 2¹ = 305136511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305136511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1540995 + ... + 1541192.

It is an arithmetic number, because the mean of its divisors is an integer number (40068444).

Almost surely, 2^305136513 is an apocalyptic number.

305136513 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

305136513 is a deficient number, since it is larger than the sum of its proper divisors (175684815).

305136513 is a wasteful number, since it uses less digits than its factorization.

305136513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082204 (or 3082201 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 305136513 is about 17468.1571151624. The cubic root of 305136513 is about 673.2319622959.

The spelling of 305136513 in words is "three hundred five million, one hundred thirty-six thousand, five hundred thirteen".