2311232420 has 48 divisors (see below), whose sum is σ = 5581043328. Its totient is φ = 787553280.

The previous prime is 2311232419. The next prime is 2311232431. The reversal of 2311232420 is 242321132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2311232392 and 2311232401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27821 + ... + 73460.

It is an arithmetic number, because the mean of its divisors is an integer number (116271736).

Almost surely, 2^2311232420 is an apocalyptic number.

2311232420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311232420 is an abundant number, since it is smaller than the sum of its proper divisors (3269810908).

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

2311232420 is a wasteful number, since it uses less digits than its factorization.

2311232420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101460 (or 101458 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2311232420 is about 48075.2786783395. The cubic root of 2311232420 is about 1322.1514539667.

Adding to 2311232420 its reverse (242321132), we get a palindrome (2553553552).

The spelling of 2311232420 in words is "two billion, three hundred eleven million, two hundred thirty-two thousand, four hundred twenty".