61331323 has 2 divisors, whose sum is σ = 61331324. Its totient is φ = 61331322.

The previous prime is 61331261. The next prime is 61331327. The reversal of 61331323 is 32313316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61331323 - 2²⁵ = 27776891 is a prime.

It is a super-4 number, since 4×61331323⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61331294 and 61331303.

It is not a weakly prime, because it can be changed into another prime (61331327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30665661 + 30665662.

It is an arithmetic number, because the mean of its divisors is an integer number (30665662).

Almost surely, 2^61331323 is an apocalyptic number.

61331323 is a deficient number, since it is larger than the sum of its proper divisors (1).

61331323 is an equidigital number, since it uses as much as digits as its factorization.

61331323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 22.

The square root of 61331323 is about 7831.4317337253. The cubic root of 61331323 is about 394.3611378714.

Adding to 61331323 its reverse (32313316), we get a palindrome (93644639).

The spelling of 61331323 in words is "sixty-one million, three hundred thirty-one thousand, three hundred twenty-three".