61065131 has 2 divisors, whose sum is σ = 61065132. Its totient is φ = 61065130.

The previous prime is 61065127. The next prime is 61065143. The reversal of 61065131 is 13156016.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61065131 - 2² = 61065127 is a prime.

It is a super-2 number, since 2×61065131² = 7457900448094322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61065097 and 61065106.

It is not a weakly prime, because it can be changed into another prime (61065101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30532565 + 30532566.

It is an arithmetic number, because the mean of its divisors is an integer number (30532566).

Almost surely, 2^61065131 is an apocalyptic number.

61065131 is a deficient number, since it is larger than the sum of its proper divisors (1).

61065131 is an equidigital number, since it uses as much as digits as its factorization.

61065131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 61065131 is about 7814.4181485252. The cubic root of 61065131 is about 393.7897712074.

The spelling of 61065131 in words is "sixty-one million, sixty-five thousand, one hundred thirty-one".