306750131 has 2 divisors, whose sum is σ = 306750132. Its totient is φ = 306750130.

The previous prime is 306750107. The next prime is 306750133. The reversal of 306750131 is 131057603.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306750131 is a prime.

It is a super-2 number, since 2×306750131² = 188191285737034322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 306750133, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 306750131.

It is not a weakly prime, because it can be changed into another prime (306750133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153375065 + 153375066.

It is an arithmetic number, because the mean of its divisors is an integer number (153375066).

Almost surely, 2^306750131 is an apocalyptic number.

306750131 is a deficient number, since it is larger than the sum of its proper divisors (1).

306750131 is an equidigital number, since it uses as much as digits as its factorization.

306750131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 306750131 is about 17514.2836279421. The cubic root of 306750131 is about 674.4166013584.

The spelling of 306750131 in words is "three hundred six million, seven hundred fifty thousand, one hundred thirty-one".