2311142420 has 24 divisors (see below), whose sum is σ = 4859893248. Its totient is φ = 923220000.

The previous prime is 2311142417. The next prime is 2311142437. The reversal of 2311142420 is 242411132.

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 = 2311142392 and 2311142401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61916 + ... + 91955.

It is an arithmetic number, because the mean of its divisors is an integer number (202495552).

Almost surely, 2^2311142420 is an apocalyptic number.

2311142420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311142420 is an abundant number, since it is smaller than the sum of its proper divisors (2548750828).

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

2311142420 is a wasteful number, since it uses less digits than its factorization.

2311142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154631 (or 154629 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2311142420 is about 48074.3426372114. The cubic root of 2311142420 is about 1322.1342921019.

Adding to 2311142420 its reverse (242411132), we get a palindrome (2553553552).

The spelling of 2311142420 in words is "two billion, three hundred eleven million, one hundred forty-two thousand, four hundred twenty".