2421351431 has 4 divisors (see below), whose sum is σ = 2548791000. Its totient is φ = 2293911864.

The previous prime is 2421351421. The next prime is 2421351451. The reversal of 2421351431 is 1341531242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2421351431 - 2⁶ = 2421351367 is a prime.

It is a super-2 number, since 2×2421351431² = 11725885504811495522, which contains 22 as substring.

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 2421351431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421351421) 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, 63719756 + ... + 63719793.

It is an arithmetic number, because the mean of its divisors is an integer number (637197750).

Almost surely, 2^2421351431 is an apocalyptic number.

2421351431 is a deficient number, since it is larger than the sum of its proper divisors (127439569).

2421351431 is a wasteful number, since it uses less digits than its factorization.

2421351431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127439568.

The product of its digits is 2880, while the sum is 26.

The square root of 2421351431 is about 49207.2294586883. The cubic root of 2421351431 is about 1342.8245593600.

Adding to 2421351431 its reverse (1341531242), we get a palindrome (3762882673).

The spelling of 2421351431 in words is "two billion, four hundred twenty-one million, three hundred fifty-one thousand, four hundred thirty-one".