61122431 has 8 divisors (see below), whose sum is σ = 65336544. Its totient is φ = 57038080.

The previous prime is 61122371. The next prime is 61122443. The reversal of 61122431 is 13422116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61122431 - 2⁶ = 61122367 is a prime.

It is a super-2 number, since 2×61122431² = 7471903142699522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61125431) 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 7 ways as a sum of consecutive naturals, for example, 31466 + ... + 33351.

It is an arithmetic number, because the mean of its divisors is an integer number (8167068).

Almost surely, 2^61122431 is an apocalyptic number.

61122431 is a deficient number, since it is larger than the sum of its proper divisors (4214113).

61122431 is a wasteful number, since it uses less digits than its factorization.

61122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64881.

The product of its digits is 288, while the sum is 20.

The square root of 61122431 is about 7818.0835887064. The cubic root of 61122431 is about 393.9129025786.

Adding to 61122431 its reverse (13422116), we get a palindrome (74544547).

The spelling of 61122431 in words is "sixty-one million, one hundred twenty-two thousand, four hundred thirty-one".