1331424197 has 2 divisors, whose sum is σ = 1331424198. Its totient is φ = 1331424196.

The previous prime is 1331424167. The next prime is 1331424251. The reversal of 1331424197 is 7914241331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 732839041 + 598585156 = 27071^2 + 24466^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331424197 - 2⁸ = 1331423941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331424167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665712098 + 665712099.

It is an arithmetic number, because the mean of its divisors is an integer number (665712099).

Almost surely, 2^1331424197 is an apocalyptic number.

It is an amenable number.

1331424197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331424197 is an equidigital number, since it uses as much as digits as its factorization.

1331424197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 1331424197 is about 36488.6858765837. The cubic root of 1331424197 is about 1100.1168462654.

The spelling of 1331424197 in words is "one billion, three hundred thirty-one million, four hundred twenty-four thousand, one hundred ninety-seven".