30131111999987 has 2 divisors, whose sum is σ = 30131111999988. Its totient is φ = 30131111999986.

The previous prime is 30131111999921. The next prime is 30131112000007. The reversal of 30131111999987 is 78999911113103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30131111999987 - 2⁸ = 30131111999731 is a prime.

It is not a weakly prime, because it can be changed into another prime (30131111999887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15065555999993 + 15065555999994.

It is an arithmetic number, because the mean of its divisors is an integer number (15065555999994).

Almost surely, 2^{30131111999987} is an apocalyptic number.

30131111999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

30131111999987 is an equidigital number, since it uses as much as digits as its factorization.

30131111999987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3306744, while the sum is 62.

The spelling of 30131111999987 in words is "thirty trillion, one hundred thirty-one billion, one hundred eleven million, nine hundred ninety-nine thousand, nine hundred eighty-seven".