20313142 has 8 divisors (see below), whose sum is σ = 30710016. Its totient is φ = 10076472.

The previous prime is 20313133. The next prime is 20313143. The reversal of 20313142 is 24131302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39733 + ... + 40240.

It is an arithmetic number, because the mean of its divisors is an integer number (3838752).

Almost surely, 2^20313142 is an apocalyptic number.

20313142 is a deficient number, since it is larger than the sum of its proper divisors (10396874).

20313142 is a wasteful number, since it uses less digits than its factorization.

20313142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80102.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20313142 is about 4507.0103172724. The cubic root of 20313142 is about 272.8510952959.

Adding to 20313142 its reverse (24131302), we get a palindrome (44444444).

The spelling of 20313142 in words is "twenty million, three hundred thirteen thousand, one hundred forty-two".