1031303231111 has 4 divisors (see below), whose sum is σ = 1031416682424. Its totient is φ = 1031189779800.

The previous prime is 1031303231093. The next prime is 1031303231149. The reversal of 1031303231111 is 1111323031301.

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 1031303231111 - 2³⁸ = 756425324167 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 (1031903231111) 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, 56712020 + ... + 56730201.

It is an arithmetic number, because the mean of its divisors is an integer number (257854170606).

Almost surely, 2^{1031303231111} is an apocalyptic number.

1031303231111 is a deficient number, since it is larger than the sum of its proper divisors (113451313).

1031303231111 is an equidigital number, since it uses as much as digits as its factorization.

1031303231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113451312.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1031303231111 its reverse (1111323031301), we get a palindrome (2142626262412).

The spelling of 1031303231111 in words is "one trillion, thirty-one billion, three hundred three million, two hundred thirty-one thousand, one hundred eleven".