30102019951 has 2 divisors, whose sum is σ = 30102019952. Its totient is φ = 30102019950.

The previous prime is 30102019949. The next prime is 30102020021. The reversal of 30102019951 is 15991020103.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30102019951 - 2¹ = 30102019949 is a prime.

It is a super-2 number, since 2×30102019951² (a number of 22 digits) contains 22 as substring.

Together with 30102019949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30102019351) 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, 15051009975 + 15051009976.

It is an arithmetic number, because the mean of its divisors is an integer number (15051009976).

Almost surely, 2^30102019951 is an apocalyptic number.

30102019951 is a deficient number, since it is larger than the sum of its proper divisors (1).

30102019951 is an equidigital number, since it uses as much as digits as its factorization.

30102019951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The spelling of 30102019951 in words is "thirty billion, one hundred two million, nineteen thousand, nine hundred fifty-one".