61343311 has 2 divisors, whose sum is σ = 61343312. Its totient is φ = 61343310.

The previous prime is 61343309. The next prime is 61343329. The reversal of 61343311 is 11334316.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61343311 - 2¹ = 61343309 is a prime.

Together with 61343309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61343351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30671655 + 30671656.

It is an arithmetic number, because the mean of its divisors is an integer number (30671656).

Almost surely, 2^61343311 is an apocalyptic number.

61343311 is a deficient number, since it is larger than the sum of its proper divisors (1).

61343311 is an equidigital number, since it uses as much as digits as its factorization.

61343311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 61343311 is about 7832.1970736186. The cubic root of 61343311 is about 394.3868305251.

Adding to 61343311 its reverse (11334316), we get a palindrome (72677627).

The spelling of 61343311 in words is "sixty-one million, three hundred forty-three thousand, three hundred eleven".