20110100001031 has 2 divisors, whose sum is σ = 20110100001032. Its totient is φ = 20110100001030.

The previous prime is 20110100000957. The next prime is 20110100001067. The reversal of 20110100001031 is 13010000101102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110100001031 is a prime.

It is a super-2 number, since 2×20110100001031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110100000999 and 20110100001017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110100004031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055050000515 + 10055050000516.

It is an arithmetic number, because the mean of its divisors is an integer number (10055050000516).

Almost surely, 2^{20110100001031} is an apocalyptic number.

20110100001031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110100001031 is an equidigital number, since it uses as much as digits as its factorization.

20110100001031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 20110100001031 its reverse (13010000101102), we get a palindrome (33120100102133).

The spelling of 20110100001031 in words is "twenty trillion, one hundred ten billion, one hundred million, one thousand, thirty-one".