61431316 has 12 divisors (see below), whose sum is σ = 107578240. Its totient is φ = 30694680.

The previous prime is 61431301. The next prime is 61431341. The reversal of 61431316 is 61313416.

It is a happy number.

61431316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2671 + ... + 11401.

Almost surely, 2^61431316 is an apocalyptic number.

It is an amenable number.

61431316 is a deficient number, since it is larger than the sum of its proper divisors (46146924).

61431316 is a wasteful number, since it uses less digits than its factorization.

61431316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10494 (or 10492 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 61431316 is about 7837.8132154320. The cubic root of 61431316 is about 394.5753402308.

The spelling of 61431316 in words is "sixty-one million, four hundred thirty-one thousand, three hundred sixteen".