1011003011231 has 2 divisors, whose sum is σ = 1011003011232. Its totient is φ = 1011003011230.

The previous prime is 1011003011153. The next prime is 1011003011269. The reversal of 1011003011231 is 1321103001101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011003011231 is a prime.

It is a super-2 number, since 2×1011003011231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011003011131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505501505615 + 505501505616.

It is an arithmetic number, because the mean of its divisors is an integer number (505501505616).

Almost surely, 2^{1011003011231} is an apocalyptic number.

1011003011231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011003011231 is an equidigital number, since it uses as much as digits as its factorization.

1011003011231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1011003011231 its reverse (1321103001101), we get a palindrome (2332106012332).

The spelling of 1011003011231 in words is "one trillion, eleven billion, three million, eleven thousand, two hundred thirty-one".