11810128631 has 8 divisors (see below), whose sum is σ = 13497970464. Its totient is φ = 10122456960.

The previous prime is 11810128613. The next prime is 11810128639. The reversal of 11810128631 is 13682101811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11810128631 - 2²⁶ = 11743019767 is a prime.

It is a super-2 number, since 2×11810128631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11810128639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193571 + ... + 247163.

It is an arithmetic number, because the mean of its divisors is an integer number (1687246308).

Almost surely, 2^11810128631 is an apocalyptic number.

11810128631 is a deficient number, since it is larger than the sum of its proper divisors (1687841833).

11810128631 is an equidigital number, since it uses as much as digits as its factorization.

11810128631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85081.

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 11810128631 in words is "eleven billion, eight hundred ten million, one hundred twenty-eight thousand, six hundred thirty-one".