7427131 has 2 divisors, whose sum is σ = 7427132. Its totient is φ = 7427130.

The previous prime is 7427117. The next prime is 7427141. The reversal of 7427131 is 1317247.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1317247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7427131 - 2⁵ = 7427099 is a prime.

It is a super-2 number, since 2×7427131² = 110324549782322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7427096 and 7427105.

It is not a weakly prime, because it can be changed into another prime (7427141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3713565 + 3713566.

It is an arithmetic number, because the mean of its divisors is an integer number (3713566).

Almost surely, 2^7427131 is an apocalyptic number.

7427131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7427131 is an equidigital number, since it uses as much as digits as its factorization.

7427131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 25.

The square root of 7427131 is about 2725.2763162659. The cubic root of 7427131 is about 195.1073789487.

The spelling of 7427131 in words is "seven million, four hundred twenty-seven thousand, one hundred thirty-one".