61231317 has 16 divisors (see below), whose sum is σ = 93488640. Its totient is φ = 34920432.

The previous prime is 61231309. The next prime is 61231349. The reversal of 61231317 is 71313216.

61231317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61231317 - 2³ = 61231309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61231517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9234 + ... + 14412.

It is an arithmetic number, because the mean of its divisors is an integer number (5843040).

Almost surely, 2^61231317 is an apocalyptic number.

It is an amenable number.

61231317 is a deficient number, since it is larger than the sum of its proper divisors (32257323).

61231317 is a wasteful number, since it uses less digits than its factorization.

61231317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752.

The product of its digits is 756, while the sum is 24.

The square root of 61231317 is about 7825.0442171275. The cubic root of 61231317 is about 394.1466746715.

The spelling of 61231317 in words is "sixty-one million, two hundred thirty-one thousand, three hundred seventeen".