20311686242 has 32 divisors (see below), whose sum is σ = 32248444800. Its totient is φ = 9568274688.

The previous prime is 20311686233. The next prime is 20311686247. The reversal of 20311686242 is 24268611302.

It is not an unprimeable number, because it can be changed into a prime (20311686247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5620028 + ... + 5623640.

It is an arithmetic number, because the mean of its divisors is an integer number (1007763900).

Almost surely, 2^20311686242 is an apocalyptic number.

20311686242 is a deficient number, since it is larger than the sum of its proper divisors (11936758558).

20311686242 is a wasteful number, since it uses less digits than its factorization.

20311686242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 20311686242 in words is "twenty billion, three hundred eleven million, six hundred eighty-six thousand, two hundred forty-two".