1011231302013 has 24 divisors (see below), whose sum is σ = 1511185049400. Its totient is φ = 650842988544.

The previous prime is 1011231301937. The next prime is 1011231302083. The reversal of 1011231302013 is 3102031321101.

It can be written as a sum of positive squares in 4 ways, for example, as 38666503044 + 972564798969 = 196638^2 + 986187^2 .

It is not a de Polignac number, because 1011231302013 - 2³³ = 1002641367421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011231302083) 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, 2519481 + ... + 2893137.

It is an arithmetic number, because the mean of its divisors is an integer number (62966043725).

Almost surely, 2^{1011231302013} is an apocalyptic number.

It is an amenable number.

1011231302013 is a deficient number, since it is larger than the sum of its proper divisors (499953747387).

1011231302013 is a wasteful number, since it uses less digits than its factorization.

1011231302013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384061 (or 384058 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1011231302013 its reverse (3102031321101), we get a palindrome (4113262623114).

The spelling of 1011231302013 in words is "one trillion, eleven billion, two hundred thirty-one million, three hundred two thousand, thirteen".