61317323 has 2 divisors, whose sum is σ = 61317324. Its totient is φ = 61317322.

The previous prime is 61317293. The next prime is 61317337. The reversal of 61317323 is 32371316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61317323 - 2²² = 57123019 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 61317292 and 61317301.

It is not a weakly prime, because it can be changed into another prime (61317923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30658661 + 30658662.

It is an arithmetic number, because the mean of its divisors is an integer number (30658662).

Almost surely, 2^61317323 is an apocalyptic number.

61317323 is a deficient number, since it is larger than the sum of its proper divisors (1).

61317323 is an equidigital number, since it uses as much as digits as its factorization.

61317323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 26.

The square root of 61317323 is about 7830.5378487049. The cubic root of 61317323 is about 394.3311288656.

Adding to 61317323 its reverse (32371316), we get a palindrome (93688639).

The spelling of 61317323 in words is "sixty-one million, three hundred seventeen thousand, three hundred twenty-three".