11431785036 has 192 divisors, whose sum is σ = 33097236480. Its totient is φ = 2999082240.

The previous prime is 11431785011. The next prime is 11431785037. The reversal of 11431785036 is 63058713411.

It is a junction number, because it is equal to n+sod(n) for n = 11431784985 and 11431785003.

It is not an unprimeable number, because it can be changed into a prime (11431785037) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11821425 + ... + 11822391.

It is an arithmetic number, because the mean of its divisors is an integer number (172381440).

Almost surely, 2^11431785036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11431785036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16548618240).

11431785036 is an abundant number, since it is smaller than the sum of its proper divisors (21665451444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11431785036 is a wasteful number, since it uses less digits than its factorization.

11431785036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 11431785036 in words is "eleven billion, four hundred thirty-one million, seven hundred eighty-five thousand, thirty-six".