2431213421 has 16 divisors (see below), whose sum is σ = 3061855104. Its totient is φ = 1878859584.

The previous prime is 2431213417. The next prime is 2431213423. The reversal of 2431213421 is 1243121342.

It is not a de Polignac number, because 2431213421 - 2² = 2431213417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2431213423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306746 + ... + 314571.

It is an arithmetic number, because the mean of its divisors is an integer number (191365944).

Almost surely, 2^2431213421 is an apocalyptic number.

It is an amenable number.

2431213421 is a deficient number, since it is larger than the sum of its proper divisors (630641683).

2431213421 is a wasteful number, since it uses less digits than its factorization.

2431213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621380.

The product of its digits is 1152, while the sum is 23.

The square root of 2431213421 is about 49307.3363811107. The cubic root of 2431213421 is about 1344.6451657677.

Adding to 2431213421 its reverse (1243121342), we get a palindrome (3674334763).

The spelling of 2431213421 in words is "two billion, four hundred thirty-one million, two hundred thirteen thousand, four hundred twenty-one".