61201231 has 16 divisors (see below), whose sum is σ = 76608000. Its totient is φ = 47598048.

The previous prime is 61201201. The next prime is 61201237. The reversal of 61201231 is 13210216.

It is a cyclic number.

It is not a de Polignac number, because 61201231 - 2⁵ = 61201199 is a prime.

It is a super-2 number, since 2×61201231² = 7491181351830722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61201237) 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 15 ways as a sum of consecutive naturals, for example, 331 + ... + 11068.

It is an arithmetic number, because the mean of its divisors is an integer number (4788000).

Almost surely, 2^61201231 is an apocalyptic number.

61201231 is a deficient number, since it is larger than the sum of its proper divisors (15406769).

61201231 is a wasteful number, since it uses less digits than its factorization.

61201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11478.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 61201231 is about 7823.1215636726. The cubic root of 61201231 is about 394.0821094558.

Adding to 61201231 its reverse (13210216), we get a palindrome (74411447).

The spelling of 61201231 in words is "sixty-one million, two hundred one thousand, two hundred thirty-one".