2031420321 has 48 divisors (see below), whose sum is σ = 3737635200. Its totient is φ = 1035016704.

The previous prime is 2031420277. The next prime is 2031420337. The reversal of 2031420321 is 1230241302.

2031420321 is a `hidden beast` number, since 203 + 142 + 0 + 321 = 666.

It is not a de Polignac number, because 2031420321 - 2²³ = 2023031713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031420294 and 2031420303.

It is not an unprimeable number, because it can be changed into a prime (2031420341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29566 + ... + 70263.

It is an arithmetic number, because the mean of its divisors is an integer number (77867400).

Almost surely, 2^2031420321 is an apocalyptic number.

2031420321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2031420321 is a deficient number, since it is larger than the sum of its proper divisors (1706214879).

2031420321 is a wasteful number, since it uses less digits than its factorization.

2031420321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99878 (or 99875 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2031420321 is about 45071.2804455343. The cubic root of 2031420321 is about 1266.4846511855.

Adding to 2031420321 its reverse (1230241302), we get a palindrome (3261661623).

The spelling of 2031420321 in words is "two billion, thirty-one million, four hundred twenty thousand, three hundred twenty-one".