7149731 has 2 divisors, whose sum is σ = 7149732. Its totient is φ = 7149730.

The previous prime is 7149713. The next prime is 7149733. The reversal of 7149731 is 1379417.

Together with previous prime (7149713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7149731 - 2²² = 2955427 is a prime.

It is a super-2 number, since 2×7149731² = 102237306744722, which contains 22 as substring.

Together with 7149733, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₄₈₆₁₄₉ and since 7149731 and 486149 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (7149733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3574865 + 3574866.

It is an arithmetic number, because the mean of its divisors is an integer number (3574866).

Almost surely, 2^7149731 is an apocalyptic number.

7149731 is a deficient number, since it is larger than the sum of its proper divisors (1).

7149731 is an equidigital number, since it uses as much as digits as its factorization.

7149731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 7149731 is about 2673.8980908030. The cubic root of 7149731 is about 192.6474363829.

The spelling of 7149731 in words is "seven million, one hundred forty-nine thousand, seven hundred thirty-one".