2431431397 has 2 divisors, whose sum is σ = 2431431398. Its totient is φ = 2431431396.

The previous prime is 2431431377. The next prime is 2431431413. The reversal of 2431431397 is 7931341342.

2431431397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2157230916 + 274200481 = 46446^2 + 16559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431431397 - 2¹¹ = 2431429349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2431431347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215715698 + 1215715699.

It is an arithmetic number, because the mean of its divisors is an integer number (1215715699).

Almost surely, 2^2431431397 is an apocalyptic number.

It is an amenable number.

2431431397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431431397 is an equidigital number, since it uses as much as digits as its factorization.

2431431397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 2431431397 is about 49309.5467125789. The cubic root of 2431431397 is about 1344.6853503127.

The spelling of 2431431397 in words is "two billion, four hundred thirty-one million, four hundred thirty-one thousand, three hundred ninety-seven".