1031321123111 has 2 divisors, whose sum is σ = 1031321123112. Its totient is φ = 1031321123110.

The previous prime is 1031321123051. The next prime is 1031321123117. The reversal of 1031321123111 is 1113211231301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031321123111 - 2⁶ = 1031321123047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031321123117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515660561555 + 515660561556.

It is an arithmetic number, because the mean of its divisors is an integer number (515660561556).

Almost surely, 2^{1031321123111} is an apocalyptic number.

1031321123111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031321123111 is an equidigital number, since it uses as much as digits as its factorization.

1031321123111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1031321123111 its reverse (1113211231301), we get a palindrome (2144532354412).

The spelling of 1031321123111 in words is "one trillion, thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred eleven".