1150331731 has 2 divisors, whose sum is σ = 1150331732. Its totient is φ = 1150331730.

The previous prime is 1150331713. The next prime is 1150331747. The reversal of 1150331731 is 1371330511.

Together with previous prime (1150331713) 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 1150331731 - 2¹⁹ = 1149807443 is a prime.

It is a super-2 number, since 2×1150331731² = 2646526182690912722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1150331696 and 1150331705.

It is not a weakly prime, because it can be changed into another prime (1150331761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575165865 + 575165866.

It is an arithmetic number, because the mean of its divisors is an integer number (575165866).

Almost surely, 2^1150331731 is an apocalyptic number.

1150331731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150331731 is an equidigital number, since it uses as much as digits as its factorization.

1150331731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 1150331731 is about 33916.5406697086. The cubic root of 1150331731 is about 1047.7902829369.

It can be divided in two parts, 11503 and 31731, that added together give a palindrome (43234).

The spelling of 1150331731 in words is "one billion, one hundred fifty million, three hundred thirty-one thousand, seven hundred thirty-one".