61286131 has 2 divisors, whose sum is σ = 61286132. Its totient is φ = 61286130.

The previous prime is 61286119. The next prime is 61286143. The reversal of 61286131 is 13168216.

It is a balanced prime because it is at equal distance from previous prime (61286119) and next prime (61286143).

It is a cyclic number.

It is not a de Polignac number, because 61286131 - 2⁹ = 61285619 is a prime.

It is a super-2 number, since 2×61286131² = 7511979705898322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61286131.

It is not a weakly prime, because it can be changed into another prime (61286111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30643065 + 30643066.

It is an arithmetic number, because the mean of its divisors is an integer number (30643066).

Almost surely, 2^61286131 is an apocalyptic number.

61286131 is a deficient number, since it is larger than the sum of its proper divisors (1).

61286131 is an equidigital number, since it uses as much as digits as its factorization.

61286131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 61286131 is about 7828.5459058499. The cubic root of 61286131 is about 394.2642523712.

The spelling of 61286131 in words is "sixty-one million, two hundred eighty-six thousand, one hundred thirty-one".