61822431 has 12 divisors (see below), whose sum is σ = 97417320. Its totient is φ = 37468080.

The previous prime is 61822429. The next prime is 61822451. The reversal of 61822431 is 13422816.

61822431 is a `hidden beast` number, since 618 + 2 + 2 + 43 + 1 = 666.

It is not a de Polignac number, because 61822431 - 2¹ = 61822429 is a prime.

It is a super-2 number, since 2×61822431² = 7644025949499522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61822395 and 61822404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61822451) 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 in 11 ways as a sum of consecutive naturals, for example, 312136 + ... + 312333.

It is an arithmetic number, because the mean of its divisors is an integer number (8118110).

Almost surely, 2^61822431 is an apocalyptic number.

61822431 is a deficient number, since it is larger than the sum of its proper divisors (35594889).

61822431 is a wasteful number, since it uses less digits than its factorization.

61822431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624486 (or 624483 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 61822431 is about 7862.7241462486. The cubic root of 61822431 is about 395.4109508244.

The spelling of 61822431 in words is "sixty-one million, eight hundred twenty-two thousand, four hundred thirty-one".