4121431997 has 2 divisors, whose sum is σ = 4121431998. Its totient is φ = 4121431996.

The previous prime is 4121431967. The next prime is 4121432039. The reversal of 4121431997 is 7991341214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4034028196 + 87403801 = 63514^2 + 9349^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121431997 - 2²⁴ = 4104654781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121431967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060715998 + 2060715999.

It is an arithmetic number, because the mean of its divisors is an integer number (2060715999).

Almost surely, 2^4121431997 is an apocalyptic number.

It is an amenable number.

4121431997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121431997 is an equidigital number, since it uses as much as digits as its factorization.

4121431997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 4121431997 is about 64198.3800185020. The cubic root of 4121431997 is about 1603.3046278903.

The spelling of 4121431997 in words is "four billion, one hundred twenty-one million, four hundred thirty-one thousand, nine hundred ninety-seven".