61131013 has 8 divisors (see below), whose sum is σ = 61682688. Its totient is φ = 60582144.

The previous prime is 61131011. The next prime is 61131017. The reversal of 61131013 is 31013116.

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 61131013 - 2¹ = 61131011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61131011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73506 + ... + 74332.

It is an arithmetic number, because the mean of its divisors is an integer number (7710336).

Almost surely, 2^61131013 is an apocalyptic number.

It is an amenable number.

61131013 is a deficient number, since it is larger than the sum of its proper divisors (551675).

61131013 is a wasteful number, since it uses less digits than its factorization.

61131013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 61131013 is about 7818.6324251751. The cubic root of 61131013 is about 393.9313377219.

Adding to 61131013 its reverse (31013116), we get a palindrome (92144129).

The spelling of 61131013 in words is "sixty-one million, one hundred thirty-one thousand, thirteen".