30317142 has 16 divisors (see below), whose sum is σ = 61489152. Its totient is φ = 9963240.

The previous prime is 30317129. The next prime is 30317143. The reversal of 30317142 is 24171303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30317143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35158 + ... + 36009.

It is an arithmetic number, because the mean of its divisors is an integer number (3843072).

Almost surely, 2^30317142 is an apocalyptic number.

30317142 is an abundant number, since it is smaller than the sum of its proper divisors (31172010).

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

30317142 is a wasteful number, since it uses less digits than its factorization.

30317142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71243.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 30317142 is about 5506.1004349721. The cubic root of 30317142 is about 311.8143413849.

Adding to 30317142 its reverse (24171303), we get a palindrome (54488445).

The spelling of 30317142 in words is "thirty million, three hundred seventeen thousand, one hundred forty-two".