1148731 has 2 divisors, whose sum is σ = 1148732. Its totient is φ = 1148730.

The previous prime is 1148729. The next prime is 1148737. The reversal of 1148731 is 1378411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1148731 - 2¹ = 1148729 is a prime.

It is a super-2 number, since 2×1148731² = 2639165820722, which contains 22 as substring.

Together with 1148729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1148696 and 1148705.

It is not a weakly prime, because it can be changed into another prime (1148737) 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, 574365 + 574366.

It is an arithmetic number, because the mean of its divisors is an integer number (574366).

2^1148731 is an apocalyptic number.

1148731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148731 is an equidigital number, since it uses as much as digits as its factorization.

1148731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 25.

The square root of 1148731 is about 1071.7886918605. The cubic root of 1148731 is about 104.7304043788.

The spelling of 1148731 in words is "one million, one hundred forty-eight thousand, seven hundred thirty-one".