1031010020011 has 4 divisors (see below), whose sum is σ = 1031305357224. Its totient is φ = 1030714682800.

The previous prime is 1031010020009. The next prime is 1031010020023. The reversal of 1031010020011 is 1100200101301.

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 1031010020011 - 2¹ = 1031010020009 is a prime.

It is a super-2 number, since 2×1031010020011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031010020011.

It is not an unprimeable number, because it can be changed into a prime (1031010027011) 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, 147663370 + ... + 147670351.

It is an arithmetic number, because the mean of its divisors is an integer number (257826339306).

Almost surely, 2^{1031010020011} is an apocalyptic number.

1031010020011 is a deficient number, since it is larger than the sum of its proper divisors (295337213).

1031010020011 is an equidigital number, since it uses as much as digits as its factorization.

1031010020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295337212.

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

Adding to 1031010020011 its reverse (1100200101301), we get a palindrome (2131210121312).

The spelling of 1031010020011 in words is "one trillion, thirty-one billion, ten million, twenty thousand, eleven".