20311001430047 has 4 divisors (see below), whose sum is σ = 20311418979600. Its totient is φ = 20310583880496.

The previous prime is 20311001430043. The next prime is 20311001430079. The reversal of 20311001430047 is 74003410011302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20311001430047 - 2² = 20311001430043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311001429998 and 20311001430025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311001430043) 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, 208701803 + ... + 208799100.

It is an arithmetic number, because the mean of its divisors is an integer number (5077854744900).

Almost surely, 2^{20311001430047} is an apocalyptic number.

20311001430047 is a deficient number, since it is larger than the sum of its proper divisors (417549553).

20311001430047 is an equidigital number, since it uses as much as digits as its factorization.

20311001430047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417549552.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 20311001430047 its reverse (74003410011302), we get a palindrome (94314411441349).

The spelling of 20311001430047 in words is "twenty trillion, three hundred eleven billion, one million, four hundred thirty thousand, forty-seven".