1303231011031 has 2 divisors, whose sum is σ = 1303231011032. Its totient is φ = 1303231011030.

The previous prime is 1303231011013. The next prime is 1303231011073. The reversal of 1303231011031 is 1301101323031.

Together with previous prime (1303231011013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1303231011031 - 2¹⁷ = 1303230879959 is a prime.

It is a super-2 number, since 2×1303231011031² (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 (1303231011011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651615505515 + 651615505516.

It is an arithmetic number, because the mean of its divisors is an integer number (651615505516).

Almost surely, 2^{1303231011031} is an apocalyptic number.

1303231011031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303231011031 is an equidigital number, since it uses as much as digits as its factorization.

1303231011031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1303231011031 its reverse (1301101323031), we get a palindrome (2604332334062).

The spelling of 1303231011031 in words is "one trillion, three hundred three billion, two hundred thirty-one million, eleven thousand, thirty-one".