61263311 has 2 divisors, whose sum is σ = 61263312. Its totient is φ = 61263310.

The previous prime is 61263281. The next prime is 61263343. The reversal of 61263311 is 11336216.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61263311 - 2¹⁸ = 61001167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61263361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30631655 + 30631656.

It is an arithmetic number, because the mean of its divisors is an integer number (30631656).

Almost surely, 2^61263311 is an apocalyptic number.

61263311 is a deficient number, since it is larger than the sum of its proper divisors (1).

61263311 is an equidigital number, since it uses as much as digits as its factorization.

61263311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

The square root of 61263311 is about 7827.0882836467. The cubic root of 61263311 is about 394.2153112975.

Adding to 61263311 its reverse (11336216), we get a palindrome (72599527).

The spelling of 61263311 in words is "sixty-one million, two hundred sixty-three thousand, three hundred eleven".