30000168931 has 2 divisors, whose sum is σ = 30000168932. Its totient is φ = 30000168930.

The previous prime is 30000168899. The next prime is 30000168953. The reversal of 30000168931 is 13986100003.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30000168931 - 2⁵ = 30000168899 is a prime.

It is a super-2 number, since 2×30000168931² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30000168893 and 30000168902.

It is not a weakly prime, because it can be changed into another prime (30000168971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000084465 + 15000084466.

It is an arithmetic number, because the mean of its divisors is an integer number (15000084466).

Almost surely, 2^30000168931 is an apocalyptic number.

30000168931 is a deficient number, since it is larger than the sum of its proper divisors (1).

30000168931 is an equidigital number, since it uses as much as digits as its factorization.

30000168931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

Adding to 30000168931 its reverse (13986100003), we get a palindrome (43986268934).

The spelling of 30000168931 in words is "thirty billion, one hundred sixty-eight thousand, nine hundred thirty-one".