61306423 has 2 divisors, whose sum is σ = 61306424. Its totient is φ = 61306422.

The previous prime is 61306417. The next prime is 61306451. The reversal of 61306423 is 32460316.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61306423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61306463) 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 as a sum of consecutive naturals, namely, 30653211 + 30653212.

It is an arithmetic number, because the mean of its divisors is an integer number (30653212).

Almost surely, 2^61306423 is an apocalyptic number.

61306423 is a deficient number, since it is larger than the sum of its proper divisors (1).

61306423 is an equidigital number, since it uses as much as digits as its factorization.

61306423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 61306423 is about 7829.8418247114. The cubic root of 61306423 is about 394.3077615483.

Adding to 61306423 its reverse (32460316), we get a palindrome (93766739).

The spelling of 61306423 in words is "sixty-one million, three hundred six thousand, four hundred twenty-three".