11403321031 has 2 divisors, whose sum is σ = 11403321032. Its totient is φ = 11403321030.

The previous prime is 11403321019. The next prime is 11403321037. The reversal of 11403321031 is 13012330411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11403321031 - 2¹⁵ = 11403288263 is a prime.

It is a super-2 number, since 2×11403321031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11403321037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701660515 + 5701660516.

It is an arithmetic number, because the mean of its divisors is an integer number (5701660516).

Almost surely, 2^11403321031 is an apocalyptic number.

11403321031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11403321031 is an equidigital number, since it uses as much as digits as its factorization.

11403321031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11403321031 its reverse (13012330411), we get a palindrome (24415651442).

The spelling of 11403321031 in words is "eleven billion, four hundred three million, three hundred twenty-one thousand, thirty-one".