2531197 has 2 divisors, whose sum is σ = 2531198. Its totient is φ = 2531196.

The previous prime is 2531189. The next prime is 2531203. The reversal of 2531197 is 7911352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2414916 + 116281 = 1554^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531197 - 2³ = 2531189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265598 + 1265599.

It is an arithmetic number, because the mean of its divisors is an integer number (1265599).

2^2531197 is an apocalyptic number.

It is an amenable number.

2531197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531197 is an equidigital number, since it uses as much as digits as its factorization.

2531197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 28.

The square root of 2531197 is about 1590.9736012895. The cubic root of 2531197 is about 136.2830932717.

The spelling of 2531197 in words is "two million, five hundred thirty-one thousand, one hundred ninety-seven".