61131113 has 8 divisors (see below), whose sum is σ = 64581600. Its totient is φ = 57703968.

The previous prime is 61131097. The next prime is 61131137. The reversal of 61131113 is 31113116.

61131113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61131113 - 2⁴ = 61131097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61131091 and 61131100.

It is not an unprimeable number, because it can be changed into a prime (61131143) 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 7 ways as a sum of consecutive naturals, for example, 308 + ... + 11061.

It is an arithmetic number, because the mean of its divisors is an integer number (8072700).

Almost surely, 2^61131113 is an apocalyptic number.

It is an amenable number.

61131113 is a deficient number, since it is larger than the sum of its proper divisors (3450487).

61131113 is a wasteful number, since it uses less digits than its factorization.

61131113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11671.

The product of its digits is 54, while the sum is 17.

The square root of 61131113 is about 7818.6388201528. The cubic root of 61131113 is about 393.9315525234.

Adding to 61131113 its reverse (31113116), we get a palindrome (92244229).

The spelling of 61131113 in words is "sixty-one million, one hundred thirty-one thousand, one hundred thirteen".