11403323131 has 4 divisors (see below), whose sum is σ = 11796541200. Its totient is φ = 11010105064.

The previous prime is 11403323083. The next prime is 11403323137. The reversal of 11403323131 is 13132330411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13132330411 = 7561 ⋅1736851.

It is a cyclic number.

It is not a de Polignac number, because 11403323131 - 2²⁵ = 11369768699 is a prime.

It is a super-2 number, since 2×11403323131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11403323137) 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, 196608991 + ... + 196609048.

It is an arithmetic number, because the mean of its divisors is an integer number (2949135300).

Almost surely, 2^11403323131 is an apocalyptic number.

11403323131 is a deficient number, since it is larger than the sum of its proper divisors (393218069).

11403323131 is an equidigital number, since it uses as much as digits as its factorization.

11403323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393218068.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 11403323131 its reverse (13132330411), we get a palindrome (24535653542).

The spelling of 11403323131 in words is "eleven billion, four hundred three million, three hundred twenty-three thousand, one hundred thirty-one".