61131011 has 2 divisors, whose sum is σ = 61131012. Its totient is φ = 61131010.

The previous prime is 61130989. The next prime is 61131017. The reversal of 61131011 is 11013116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61131011 - 2⁶ = 61130947 is a prime.

It is not a weakly prime, because it can be changed into another prime (61131017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30565505 + 30565506.

It is an arithmetic number, because the mean of its divisors is an integer number (30565506).

Almost surely, 2^61131011 is an apocalyptic number.

61131011 is a deficient number, since it is larger than the sum of its proper divisors (1).

61131011 is an equidigital number, since it uses as much as digits as its factorization.

61131011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 61131011 is about 7818.6322972755. The cubic root of 61131011 is about 393.9313334258.

Adding to 61131011 its reverse (11013116), we get a palindrome (72144127).

It can be divided in two parts, 61 and 131011, that added together give a 17-th power (131072 = 2¹⁷).

The spelling of 61131011 in words is "sixty-one million, one hundred thirty-one thousand, eleven".