2646213231 has 32 divisors (see below), whose sum is σ = 3621277440. Its totient is φ = 1718496000.

The previous prime is 2646213197. The next prime is 2646213233. The reversal of 2646213231 is 1323126462.

It is not a de Polignac number, because 2646213231 - 2¹⁹ = 2645688943 is a prime.

It is a super-2 number, since 2×2646213231² = 14004888927838918722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646213233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6469755 + ... + 6470163.

It is an arithmetic number, because the mean of its divisors is an integer number (113164920).

Almost surely, 2^2646213231 is an apocalyptic number.

2646213231 is a deficient number, since it is larger than the sum of its proper divisors (975064209).

2646213231 is a wasteful number, since it uses less digits than its factorization.

2646213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807.

The product of its digits is 10368, while the sum is 30.

The square root of 2646213231 is about 51441.3572041018. The cubic root of 2646213231 is about 1383.1680403588.

Adding to 2646213231 its reverse (1323126462), we get a palindrome (3969339693).

It can be divided in two parts, 26462 and 13231, that added together give a palindrome (39693).

The spelling of 2646213231 in words is "two billion, six hundred forty-six million, two hundred thirteen thousand, two hundred thirty-one".