11631604331 has 2 divisors, whose sum is σ = 11631604332. Its totient is φ = 11631604330.

The previous prime is 11631604307. The next prime is 11631604393. The reversal of 11631604331 is 13340613611.

11631604331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11631604331 is a prime.

It is a super-2 number, since 2×11631604331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11631604294 and 11631604303.

It is not a weakly prime, because it can be changed into another prime (11631607331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5815802165 + 5815802166.

It is an arithmetic number, because the mean of its divisors is an integer number (5815802166).

Almost surely, 2^11631604331 is an apocalyptic number.

11631604331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11631604331 is an equidigital number, since it uses as much as digits as its factorization.

11631604331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 11631604331 in words is "eleven billion, six hundred thirty-one million, six hundred four thousand, three hundred thirty-one".