1041331561 has 2 divisors, whose sum is σ = 1041331562. Its totient is φ = 1041331560.

The previous prime is 1041331541. The next prime is 1041331567. The reversal of 1041331561 is 1651331401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 945193536 + 96138025 = 30744^2 + 9805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1041331561 - 2⁷ = 1041331433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1041331567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520665780 + 520665781.

It is an arithmetic number, because the mean of its divisors is an integer number (520665781).

Almost surely, 2^1041331561 is an apocalyptic number.

It is an amenable number.

1041331561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1041331561 is an equidigital number, since it uses as much as digits as its factorization.

1041331561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1041331561 is about 32269.6693661401. The cubic root of 1041331561 is about 1013.5916179846.

Adding to 1041331561 its reverse (1651331401), we get a palindrome (2692662962).

The spelling of 1041331561 in words is "one billion, forty-one million, three hundred thirty-one thousand, five hundred sixty-one".