30475375531 has 2 divisors, whose sum is σ = 30475375532. Its totient is φ = 30475375530.

The previous prime is 30475375477. The next prime is 30475375547. The reversal of 30475375531 is 13557357403.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30475375531 is a prime.

It is a super-2 number, since 2×30475375531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30475345531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15237687765 + 15237687766.

It is an arithmetic number, because the mean of its divisors is an integer number (15237687766).

Almost surely, 2^30475375531 is an apocalyptic number.

30475375531 is a deficient number, since it is larger than the sum of its proper divisors (1).

30475375531 is an equidigital number, since it uses as much as digits as its factorization.

30475375531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 661500, while the sum is 43.

The spelling of 30475375531 in words is "thirty billion, four hundred seventy-five million, three hundred seventy-five thousand, five hundred thirty-one".