990030210131 has 2 divisors, whose sum is σ = 990030210132. Its totient is φ = 990030210130.

The previous prime is 990030210101. The next prime is 990030210137. The reversal of 990030210131 is 131012030099.

It is a strong prime.

It is an emirp because it is prime and its reverse (131012030099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990030210131 - 2²² = 990026015827 is a prime.

It is a super-2 number, since 2×990030210131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 990030210094 and 990030210103.

It is not a weakly prime, because it can be changed into another prime (990030210137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495015105065 + 495015105066.

It is an arithmetic number, because the mean of its divisors is an integer number (495015105066).

Almost surely, 2^990030210131 is an apocalyptic number.

990030210131 is a deficient number, since it is larger than the sum of its proper divisors (1).

990030210131 is an equidigital number, since it uses as much as digits as its factorization.

990030210131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The spelling of 990030210131 in words is "nine hundred ninety billion, thirty million, two hundred ten thousand, one hundred thirty-one".