3121422431 has 2 divisors, whose sum is σ = 3121422432. Its totient is φ = 3121422430.

The previous prime is 3121422413. The next prime is 3121422433. The reversal of 3121422431 is 1342241213.

Together with previous prime (3121422413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3121422431 - 2¹⁴ = 3121406047 is a prime.

It is a super-2 number, since 2×3121422431² = 19486555985499899522, which contains 22 as substring.

Together with 3121422433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3121422397 and 3121422406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121422433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560711215 + 1560711216.

It is an arithmetic number, because the mean of its divisors is an integer number (1560711216).

Almost surely, 2^3121422431 is an apocalyptic number.

3121422431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121422431 is an equidigital number, since it uses as much as digits as its factorization.

3121422431 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3121422431 is about 55869.6915241171. The cubic root of 3121422431 is about 1461.4507427222.

Adding to 3121422431 its reverse (1342241213), we get a palindrome (4463663644).

The spelling of 3121422431 in words is "three billion, one hundred twenty-one million, four hundred twenty-two thousand, four hundred thirty-one".