61311061 has 12 divisors (see below), whose sum is σ = 74436448. Its totient is φ = 49459392.

The previous prime is 61311037. The next prime is 61311067. The reversal of 61311061 is 16011316.

61311061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61311061 - 2⁷ = 61310933 is a prime.

It is a super-3 number, since 3×61311061³ (a number of 24 digits) contains 333 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 (61311067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13131 + ... + 17176.

Almost surely, 2^61311061 is an apocalyptic number.

It is an amenable number.

61311061 is a deficient number, since it is larger than the sum of its proper divisors (13125387).

61311061 is a wasteful number, since it uses less digits than its factorization.

61311061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30348 (or 30331 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 61311061 is about 7830.1379936755. The cubic root of 61311061 is about 394.3177047875.

Adding to 61311061 its reverse (16011316), we get a palindrome (77322377).

The spelling of 61311061 in words is "sixty-one million, three hundred eleven thousand, sixty-one".