20101011031 has 24 divisors (see below), whose sum is σ = 21609972528. Its totient is φ = 18689616000.

The previous prime is 20101011013. The next prime is 20101011043. The reversal of 20101011031 is 13011010102.

It is not a de Polignac number, because 20101011031 - 2⁵ = 20101010999 is a prime.

It is a super-2 number, since 2×20101011031² (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 = 20101010999 and 20101011017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101011061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15215851 + ... + 15217171.

It is an arithmetic number, because the mean of its divisors is an integer number (900415522).

Almost surely, 2^20101011031 is an apocalyptic number.

20101011031 is a deficient number, since it is larger than the sum of its proper divisors (1508961497).

20101011031 is a wasteful number, since it uses less digits than its factorization.

20101011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111 (or 2092 counting only the distinct ones).

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

Adding to 20101011031 its reverse (13011010102), we get a palindrome (33112021133).

The spelling of 20101011031 in words is "twenty billion, one hundred one million, eleven thousand, thirty-one".