7272131 has 2 divisors, whose sum is σ = 7272132. Its totient is φ = 7272130.

The previous prime is 7272121. The next prime is 7272137. The reversal of 7272131 is 1312727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7272131 - 2²² = 3077827 is a prime.

It is a super-2 number, since 2×7272131² = 105767778562322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7272097 and 7272106.

It is not a weakly prime, because it can be changed into another prime (7272137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3636065 + 3636066.

It is an arithmetic number, because the mean of its divisors is an integer number (3636066).

Almost surely, 2^7272131 is an apocalyptic number.

7272131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7272131 is an equidigital number, since it uses as much as digits as its factorization.

7272131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588, while the sum is 23.

The square root of 7272131 is about 2696.6888956645. The cubic root of 7272131 is about 193.7405661726.

Adding to 7272131 its reverse (1312727), we get a palindrome (8584858).

The spelling of 7272131 in words is "seven million, two hundred seventy-two thousand, one hundred thirty-one".