1047811081 has 2 divisors, whose sum is σ = 1047811082. Its totient is φ = 1047811080.

The previous prime is 1047811073. The next prime is 1047811097. The reversal of 1047811081 is 1801187401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 682045456 + 365765625 = 26116^2 + 19125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047811081 - 2³ = 1047811073 is a prime.

It is a super-3 number, since 3×1047811081³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1047811021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523905540 + 523905541.

It is an arithmetic number, because the mean of its divisors is an integer number (523905541).

Almost surely, 2^1047811081 is an apocalyptic number.

It is an amenable number.

1047811081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047811081 is an equidigital number, since it uses as much as digits as its factorization.

1047811081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 31.

The square root of 1047811081 is about 32369.9101172679. The cubic root of 1047811081 is about 1015.6895767835.

Adding to 1047811081 its reverse (1801187401), we get a palindrome (2848998482).

The spelling of 1047811081 in words is "one billion, forty-seven million, eight hundred eleven thousand, eighty-one".