30142319 has 4 divisors (see below), whose sum is σ = 30711096. Its totient is φ = 29573544.

The previous prime is 30142313. The next prime is 30142361. The reversal of 30142319 is 91324103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30142319 is a prime.

It is a super-2 number, since 2×30142319² = 1817118789395522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30142294 and 30142303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142313) 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 in 3 ways as a sum of consecutive naturals, for example, 284309 + ... + 284414.

It is an arithmetic number, because the mean of its divisors is an integer number (7677774).

Almost surely, 2^30142319 is an apocalyptic number.

30142319 is a deficient number, since it is larger than the sum of its proper divisors (568777).

30142319 is an equidigital number, since it uses as much as digits as its factorization.

30142319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568776.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30142319 is about 5490.2020909981. The cubic root of 30142319 is about 311.2138292295.

The spelling of 30142319 in words is "thirty million, one hundred forty-two thousand, three hundred nineteen".