61127231 has 8 divisors (see below), whose sum is σ = 66776400. Its totient is φ = 55493440.

The previous prime is 61127221. The next prime is 61127233. The reversal of 61127231 is 13272116.

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 61127231 - 2²² = 56932927 is a prime.

It is a super-2 number, since 2×61127231² = 7473076739454722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61127197 and 61127206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61127233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5465 + ... + 12333.

It is an arithmetic number, because the mean of its divisors is an integer number (8347050).

Almost surely, 2^61127231 is an apocalyptic number.

61127231 is a deficient number, since it is larger than the sum of its proper divisors (5649169).

61127231 is a wasteful number, since it uses less digits than its factorization.

61127231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689.

The product of its digits is 504, while the sum is 23.

The square root of 61127231 is about 7818.3905632809. The cubic root of 61127231 is about 393.9232137546.

Adding to 61127231 its reverse (13272116), we get a palindrome (74399347).

The spelling of 61127231 in words is "sixty-one million, one hundred twenty-seven thousand, two hundred thirty-one".