2031440051 has 4 divisors (see below), whose sum is σ = 2031764400. Its totient is φ = 2031115704.

The previous prime is 2031440029. The next prime is 2031440077. The reversal of 2031440051 is 1500441302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1500441302 = 2 ⋅750220651.

It is a cyclic number.

It is not a de Polignac number, because 2031440051 - 2³⁰ = 957698227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031440351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152591 + ... + 165368.

It is an arithmetic number, because the mean of its divisors is an integer number (507941100).

Almost surely, 2^2031440051 is an apocalyptic number.

2031440051 is a deficient number, since it is larger than the sum of its proper divisors (324349).

2031440051 is an equidigital number, since it uses as much as digits as its factorization.

2031440051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324348.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2031440051 is about 45071.4993205241. The cubic root of 2031440051 is about 1266.4887513809.

Adding to 2031440051 its reverse (1500441302), we get a palindrome (3531881353).

The spelling of 2031440051 in words is "two billion, thirty-one million, four hundred forty thousand, fifty-one".