61330131 has 6 divisors (see below), whose sum is σ = 88587980. Its totient is φ = 40886748.

The previous prime is 61330097. The next prime is 61330141. The reversal of 61330131 is 13103316.

It is not a de Polignac number, because 61330131 - 2¹¹ = 61328083 is a prime.

It is a super-2 number, since 2×61330131² = 7522769936954322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61330141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3407221 + ... + 3407238.

Almost surely, 2^61330131 is an apocalyptic number.

61330131 is a deficient number, since it is larger than the sum of its proper divisors (27257849).

61330131 is a wasteful number, since it uses less digits than its factorization.

61330131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814465 (or 6814462 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 61330131 is about 7831.3556297745. The cubic root of 61330131 is about 394.3585829967.

Adding to 61330131 its reverse (13103316), we get a palindrome (74433447).

The spelling of 61330131 in words is "sixty-one million, three hundred thirty thousand, one hundred thirty-one".