11312130420 has 144 divisors (see below), whose sum is σ = 35214746112. Its totient is φ = 2937607680.

The previous prime is 11312130413. The next prime is 11312130517. The reversal of 11312130420 is 2403121311.

11312130420 is a `hidden beast` number, since 1 + 1 + 31 + 213 + 0 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11312130393 and 11312130402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5482309 + ... + 5484371.

It is an arithmetic number, because the mean of its divisors is an integer number (244546848).

Almost surely, 2^11312130420 is an apocalyptic number.

11312130420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11312130420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17607373056).

11312130420 is an abundant number, since it is smaller than the sum of its proper divisors (23902615692).

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

11312130420 is a wasteful number, since it uses less digits than its factorization.

11312130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862 (or 2857 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11312130420 its reverse (2403121311), we get a palindrome (13715251731).

The spelling of 11312130420 in words is "eleven billion, three hundred twelve million, one hundred thirty thousand, four hundred twenty".