1011326081 has 2 divisors, whose sum is σ = 1011326082. Its totient is φ = 1011326080.

The previous prime is 1011326047. The next prime is 1011326153. The reversal of 1011326081 is 1806231101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 977500225 + 33825856 = 31265^2 + 5816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011326081 is a prime.

It is a super-2 number, since 2×1011326081² = 2045560884221637122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1011326581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505663040 + 505663041.

It is an arithmetic number, because the mean of its divisors is an integer number (505663041).

Almost surely, 2^1011326081 is an apocalyptic number.

It is an amenable number.

1011326081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011326081 is an equidigital number, since it uses as much as digits as its factorization.

1011326081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1011326081 is about 31801.3534460406. The cubic root of 1011326081 is about 1003.7611960019.

Adding to 1011326081 its reverse (1806231101), we get a palindrome (2817557182).

The spelling of 1011326081 in words is "one billion, eleven million, three hundred twenty-six thousand, eighty-one".