20310942 has 8 divisors (see below), whose sum is σ = 40621896. Its totient is φ = 6770312.

The previous prime is 20310931. The next prime is 20310947. The reversal of 20310942 is 24901302.

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

20310942 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310947) 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, 1692573 + ... + 1692584.

It is an arithmetic number, because the mean of its divisors is an integer number (5077737).

Almost surely, 2^20310942 is an apocalyptic number.

20310942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20310942 is a wasteful number, since it uses less digits than its factorization.

20310942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385162.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20310942 is about 4506.7662464344. The cubic root of 20310942 is about 272.8412446275.

The spelling of 20310942 in words is "twenty million, three hundred ten thousand, nine hundred forty-two".