61317319 has 8 divisors (see below), whose sum is σ = 70197248. Its totient is φ = 52467480.

The previous prime is 61317293. The next prime is 61317323. The reversal of 61317319 is 91371316.

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 61317319 - 2²¹ = 59220167 is a prime.

It is a super-2 number, since 2×61317319² = 7519627218695522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61317359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2967 + ... + 11464.

It is an arithmetic number, because the mean of its divisors is an integer number (8774656).

Almost surely, 2^61317319 is an apocalyptic number.

61317319 is a deficient number, since it is larger than the sum of its proper divisors (8879929).

61317319 is a wasteful number, since it uses less digits than its factorization.

61317319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15045.

The product of its digits is 3402, while the sum is 31.

The square root of 61317319 is about 7830.5375932946. The cubic root of 61317319 is about 394.3311202909.

The spelling of 61317319 in words is "sixty-one million, three hundred seventeen thousand, three hundred nineteen".