61316311 has 8 divisors (see below), whose sum is σ = 70225920. Its totient is φ = 52444248.

The previous prime is 61316309. The next prime is 61316317. The reversal of 61316311 is 11361316.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61316311 - 2¹ = 61316309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61316317) 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 in 7 ways as a sum of consecutive naturals, for example, 5791 + ... + 12496.

It is an arithmetic number, because the mean of its divisors is an integer number (8778240).

Almost surely, 2^61316311 is an apocalyptic number.

61316311 is a deficient number, since it is larger than the sum of its proper divisors (8909609).

61316311 is a wasteful number, since it uses less digits than its factorization.

61316311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18773.

The product of its digits is 324, while the sum is 22.

The square root of 61316311 is about 7830.4732296331. The cubic root of 61316311 is about 394.3289594662.

Adding to 61316311 its reverse (11361316), we get a palindrome (72677627).

The spelling of 61316311 in words is "sixty-one million, three hundred sixteen thousand, three hundred eleven".