30142823 has 2 divisors, whose sum is σ = 30142824. Its totient is φ = 30142822.

The previous prime is 30142817. The next prime is 30142829. The reversal of 30142823 is 32824103.

It is a balanced prime because it is at equal distance from previous prime (30142817) and next prime (30142829).

It is a cyclic number.

It is not a de Polignac number, because 30142823 - 2⁴ = 30142807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30142829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15071411 + 15071412.

It is an arithmetic number, because the mean of its divisors is an integer number (15071412).

Almost surely, 2^30142823 is an apocalyptic number.

30142823 is a deficient number, since it is larger than the sum of its proper divisors (1).

30142823 is an equidigital number, since it uses as much as digits as its factorization.

30142823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30142823 is about 5490.2479907560. The cubic root of 30142823 is about 311.2155637885.

Adding to 30142823 its reverse (32824103), we get a palindrome (62966926).

The spelling of 30142823 in words is "thirty million, one hundred forty-two thousand, eight hundred twenty-three".