61086131 has 2 divisors, whose sum is σ = 61086132. Its totient is φ = 61086130.

The previous prime is 61086119. The next prime is 61086161. The reversal of 61086131 is 13168016.

61086131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61086131 - 2¹⁴ = 61069747 is a prime.

It is a super-2 number, since 2×61086131² = 7463030801098322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61086131.

It is not a weakly prime, because it can be changed into another prime (61086161) 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 as a sum of consecutive naturals, namely, 30543065 + 30543066.

It is an arithmetic number, because the mean of its divisors is an integer number (30543066).

Almost surely, 2^61086131 is an apocalyptic number.

61086131 is a deficient number, since it is larger than the sum of its proper divisors (1).

61086131 is an equidigital number, since it uses as much as digits as its factorization.

61086131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 61086131 is about 7815.7617031227. The cubic root of 61086131 is about 393.8349068262.

The spelling of 61086131 in words is "sixty-one million, eighty-six thousand, one hundred thirty-one".