2311440145420 has 48 divisors (see below), whose sum is σ = 5558573664000. Its totient is φ = 790905576384.

The previous prime is 2311440145387. The next prime is 2311440145451. The reversal of 2311440145420 is 245410441132.

It is a happy number.

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, 16473514 + ... + 16613233.

It is an arithmetic number, because the mean of its divisors is an integer number (115803618000).

Almost surely, 2^{2311440145420} is an apocalyptic number.

2311440145420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311440145420 is an abundant number, since it is smaller than the sum of its proper divisors (3247133518580).

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

2311440145420 is a wasteful number, since it uses less digits than its factorization.

2311440145420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33087262 (or 33087260 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 2311440145420 its reverse (245410441132), we get a palindrome (2556850586552).

The spelling of 2311440145420 in words is "two trillion, three hundred eleven billion, four hundred forty million, one hundred forty-five thousand, four hundred twenty".