2431311421 has 32 divisors (see below), whose sum is σ = 3205278720. Its totient is φ = 1786665600.

The previous prime is 2431311419. The next prime is 2431311437. The reversal of 2431311421 is 1241131342.

It is a cyclic number.

It is not a de Polignac number, because 2431311421 - 2¹ = 2431311419 is a prime.

It is a super-2 number, since 2×2431311421² = 11822550451770078482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2431311392 and 2431311401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2431311451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328441 + ... + 335761.

It is an arithmetic number, because the mean of its divisors is an integer number (100164960).

Almost surely, 2^2431311421 is an apocalyptic number.

It is an amenable number.

2431311421 is a deficient number, since it is larger than the sum of its proper divisors (773967299).

2431311421 is a wasteful number, since it uses less digits than its factorization.

2431311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7585.

The product of its digits is 576, while the sum is 22.

The square root of 2431311421 is about 49308.3301380203. The cubic root of 2431311421 is about 1344.6632326658.

Adding to 2431311421 its reverse (1241131342), we get a palindrome (3672442763).

The spelling of 2431311421 in words is "two billion, four hundred thirty-one million, three hundred eleven thousand, four hundred twenty-one".