61227231 has 16 divisors (see below), whose sum is σ = 88058880. Its totient is φ = 37617120.

The previous prime is 61227223. The next prime is 61227233. The reversal of 61227231 is 13272216.

It is not a de Polignac number, because 61227231 - 2³ = 61227223 is a prime.

It is a super-2 number, since 2×61227231² = 7497547631854722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61227233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39766 + ... + 41276.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^61227231 is an apocalyptic number.

61227231 is a deficient number, since it is larger than the sum of its proper divisors (26831649).

61227231 is a wasteful number, since it uses less digits than its factorization.

61227231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566.

The product of its digits is 1008, while the sum is 24.

The square root of 61227231 is about 7824.7831279851. The cubic root of 61227231 is about 394.1379072672.

Adding to 61227231 its reverse (13272216), we get a palindrome (74499447).

The spelling of 61227231 in words is "sixty-one million, two hundred twenty-seven thousand, two hundred thirty-one".