1011012311311 has 4 divisors (see below), whose sum is σ = 1030088015352. Its totient is φ = 991936607272.

The previous prime is 1011012311249. The next prime is 1011012311321. The reversal of 1011012311311 is 1131132101101.

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 1011012311311 - 2²³ = 1011003922703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011012311321) 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, 9537851941 + ... + 9537852046.

It is an arithmetic number, because the mean of its divisors is an integer number (257522003838).

Almost surely, 2^{1011012311311} is an apocalyptic number.

1011012311311 is a deficient number, since it is larger than the sum of its proper divisors (19075704041).

1011012311311 is an equidigital number, since it uses as much as digits as its factorization.

1011012311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19075704040.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1011012311311 its reverse (1131132101101), we get a palindrome (2142144412412).

The spelling of 1011012311311 in words is "one trillion, eleven billion, twelve million, three hundred eleven thousand, three hundred eleven".