7287131 has 2 divisors, whose sum is σ = 7287132. Its totient is φ = 7287130.

The previous prime is 7287107. The next prime is 7287193. The reversal of 7287131 is 1317827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7287131 - 2¹⁰ = 7286107 is a prime.

It is a super-2 number, since 2×7287131² = 106204556422322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7287094 and 7287103.

It is not a weakly prime, because it can be changed into another prime (7287331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643565 + 3643566.

It is an arithmetic number, because the mean of its divisors is an integer number (3643566).

Almost surely, 2^7287131 is an apocalyptic number.

7287131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7287131 is an equidigital number, since it uses as much as digits as its factorization.

7287131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 29.

The square root of 7287131 is about 2699.4686514201. The cubic root of 7287131 is about 193.8736822503.

The spelling of 7287131 in words is "seven million, two hundred eighty-seven thousand, one hundred thirty-one".