61321130 has 32 divisors (see below), whose sum is σ = 119221200. Its totient is φ = 22574592.

The previous prime is 61321129. The next prime is 61321163. The reversal of 61321130 is 3112316.

It can be written as a sum of positive squares in 8 ways, for example, as 8162449 + 53158681 = 2857^2 + 7291^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61321099 and 61321108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73556 + ... + 74384.

Almost surely, 2^61321130 is an apocalyptic number.

61321130 is a deficient number, since it is larger than the sum of its proper divisors (57900070).

61321130 is a wasteful number, since it uses less digits than its factorization.

61321130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 61321130 is about 7830.7809316824. The cubic root of 61321130 is about 394.3392896238.

Adding to 61321130 its reverse (3112316), we get a palindrome (64433446).

The spelling of 61321130 in words is "sixty-one million, three hundred twenty-one thousand, one hundred thirty".