30323142 has 24 divisors (see below), whose sum is σ = 65804544. Its totient is φ = 10091664.

The previous prime is 30323141. The next prime is 30323143. The reversal of 30323142 is 24132303.

It is an interprime number because it is at equal distance from previous prime (30323141) and next prime (30323143).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30323141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17403 + ... + 19065.

It is an arithmetic number, because the mean of its divisors is an integer number (2741856).

Almost surely, 2^30323142 is an apocalyptic number.

30323142 is an abundant number, since it is smaller than the sum of its proper divisors (35481402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30323142 is a wasteful number, since it uses less digits than its factorization.

30323142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30323142 is about 5506.6452582312. The cubic root of 30323142 is about 311.8349101953.

Adding to 30323142 its reverse (24132303), we get a palindrome (54455445).

The spelling of 30323142 in words is "thirty million, three hundred twenty-three thousand, one hundred forty-two".