2031420401 has 4 divisors (see below), whose sum is σ = 2033458932. Its totient is φ = 2029381872.

The previous prime is 2031420383. The next prime is 2031420403. The reversal of 2031420401 is 1040241302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1040241302 = 2 ⋅520120651.

It can be written as a sum of positive squares in 2 ways, for example, as 1233414400 + 798006001 = 35120^2 + 28249^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031420401 - 2⁶ = 2031420337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031420401.

It is not an unprimeable number, because it can be changed into a prime (2031420403) 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, 1017770 + ... + 1019763.

It is an arithmetic number, because the mean of its divisors is an integer number (508364733).

Almost surely, 2^2031420401 is an apocalyptic number.

It is an amenable number.

2031420401 is a deficient number, since it is larger than the sum of its proper divisors (2038531).

2031420401 is an equidigital number, since it uses as much as digits as its factorization.

2031420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038530.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2031420401 is about 45071.2813330174. The cubic root of 2031420401 is about 1266.4846678107.

Adding to 2031420401 its reverse (1040241302), we get a palindrome (3071661703).

The spelling of 2031420401 in words is "two billion, thirty-one million, four hundred twenty thousand, four hundred one".