20301100031 has 16 divisors (see below), whose sum is σ = 21699724800. Its totient is φ = 18935788608.

The previous prime is 20301100013. The next prime is 20301100033. The reversal of 20301100031 is 13000110302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20301100031 is a prime.

It is a super-2 number, since 2×20301100031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20301099985 and 20301100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301100033) 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, 3967931 + ... + 3973043.

It is an arithmetic number, because the mean of its divisors is an integer number (1356232800).

Almost surely, 2^20301100031 is an apocalyptic number.

20301100031 is a deficient number, since it is larger than the sum of its proper divisors (1398624769).

20301100031 is a wasteful number, since it uses less digits than its factorization.

20301100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8318.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 20301100031 its reverse (13000110302), we get a palindrome (33301210333).

The spelling of 20301100031 in words is "twenty billion, three hundred one million, one hundred thousand, thirty-one".