20311423014012 has 48 divisors (see below), whose sum is σ = 51041313069600. Its totient is φ = 6249380537088.

The previous prime is 20311423014011. The next prime is 20311423014053. The reversal of 20311423014012 is 21041032411302.

It is a super-2 number, since 2×20311423014012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311423014011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406614 + ... + 6386562.

It is an arithmetic number, because the mean of its divisors is an integer number (1063360688950).

Almost surely, 2^{20311423014012} is an apocalyptic number.

It is an amenable number.

20311423014012 is an abundant number, since it is smaller than the sum of its proper divisors (30729890055588).

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

20311423014012 is a wasteful number, since it uses less digits than its factorization.

20311423014012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001742 (or 6001740 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20311423014012 its reverse (21041032411302), we get a palindrome (41352455425314).

The spelling of 20311423014012 in words is "twenty trillion, three hundred eleven billion, four hundred twenty-three million, fourteen thousand, twelve".