1131244061 has 2 divisors, whose sum is σ = 1131244062. Its totient is φ = 1131244060.

The previous prime is 1131244001. The next prime is 1131244069. The reversal of 1131244061 is 1604421311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1061521561 + 69722500 = 32581^2 + 8350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131244061 - 2¹⁰ = 1131243037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131244069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565622030 + 565622031.

It is an arithmetic number, because the mean of its divisors is an integer number (565622031).

Almost surely, 2^1131244061 is an apocalyptic number.

It is an amenable number.

1131244061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131244061 is an equidigital number, since it uses as much as digits as its factorization.

1131244061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1131244061 is about 33633.9718290897. The cubic root of 1131244061 is about 1041.9625359386.

Adding to 1131244061 its reverse (1604421311), we get a palindrome (2735665372).

The spelling of 1131244061 in words is "one billion, one hundred thirty-one million, two hundred forty-four thousand, sixty-one".