7131601 has 2 divisors, whose sum is σ = 7131602. Its totient is φ = 7131600.

The previous prime is 7131583. The next prime is 7131613. The reversal of 7131601 is 1061317.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5058001 + 2073600 = 2249^2 + 1440^2 .

It is an emirp because it is prime and its reverse (1061317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7131601 - 2⁵ = 7131569 is a prime.

It is a Chen prime.

7131601 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7131661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3565800 + 3565801.

It is an arithmetic number, because the mean of its divisors is an integer number (3565801).

Almost surely, 2^7131601 is an apocalyptic number.

It is an amenable number.

7131601 is a deficient number, since it is larger than the sum of its proper divisors (1).

7131601 is an equidigital number, since it uses as much as digits as its factorization.

7131601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 7131601 is about 2670.5057573426. The cubic root of 7131601 is about 192.4844626803.

Adding to 7131601 its reverse (1061317), we get a palindrome (8192918).

The spelling of 7131601 in words is "seven million, one hundred thirty-one thousand, six hundred one".