61831412 has 12 divisors (see below), whose sum is σ = 108528420. Its totient is φ = 30823296.

The previous prime is 61831409. The next prime is 61831417. The reversal of 61831412 is 21413816.

It can be written as a sum of positive squares in 2 ways, for example, as 29637136 + 32194276 = 5444^2 + 5674^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61831417) 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 in 3 ways as a sum of consecutive naturals, for example, 21587 + ... + 24282.

It is an arithmetic number, because the mean of its divisors is an integer number (9044035).

Almost surely, 2^61831412 is an apocalyptic number.

It is an amenable number.

61831412 is a deficient number, since it is larger than the sum of its proper divisors (46697008).

61831412 is a wasteful number, since it uses less digits than its factorization.

61831412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46210 (or 46208 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 61831412 is about 7863.2952380030. The cubic root of 61831412 is about 395.4300971317.

The spelling of 61831412 in words is "sixty-one million, eight hundred thirty-one thousand, four hundred twelve".