20311242 has 32 divisors (see below), whose sum is σ = 46617984. Its totient is φ = 5779200.

The previous prime is 20311211. The next prime is 20311273. The reversal of 20311242 is 24211302.

It is an interprime number because it is at equal distance from previous prime (20311211) and next prime (20311273).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10942 + ... + 12662.

It is an arithmetic number, because the mean of its divisors is an integer number (1456812).

Almost surely, 2^20311242 is an apocalyptic number.

20311242 is an abundant number, since it is smaller than the sum of its proper divisors (26306742).

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

20311242 is a wasteful number, since it uses less digits than its factorization.

20311242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20311242 is about 4506.7995295997. The cubic root of 20311242 is about 272.8425879423.

Adding to 20311242 its reverse (24211302), we get a palindrome (44522544).

The spelling of 20311242 in words is "twenty million, three hundred eleven thousand, two hundred forty-two".