61322311 has 2 divisors, whose sum is σ = 61322312. Its totient is φ = 61322310.

The previous prime is 61322243. The next prime is 61322323. The reversal of 61322311 is 11322316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61322311 - 2¹³ = 61314119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61322341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30661155 + 30661156.

It is an arithmetic number, because the mean of its divisors is an integer number (30661156).

Almost surely, 2^61322311 is an apocalyptic number.

61322311 is a deficient number, since it is larger than the sum of its proper divisors (1).

61322311 is an equidigital number, since it uses as much as digits as its factorization.

61322311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 61322311 is about 7830.8563388687. The cubic root of 61322311 is about 394.3418211694.

Adding to 61322311 its reverse (11322316), we get a palindrome (72644627).

The spelling of 61322311 in words is "sixty-one million, three hundred twenty-two thousand, three hundred eleven".