61213107 has 16 divisors (see below), whose sum is σ = 87059232. Its totient is φ = 38123520.

The previous prime is 61213091. The next prime is 61213151. The reversal of 61213107 is 70131216.

61213107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61213107 - 2⁴ = 61213091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61213157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2607 + ... + 11367.

It is an arithmetic number, because the mean of its divisors is an integer number (5441202).

Almost surely, 2^61213107 is an apocalyptic number.

61213107 is a deficient number, since it is larger than the sum of its proper divisors (25846125).

61213107 is a wasteful number, since it uses less digits than its factorization.

61213107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8918.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 61213107 is about 7823.8805589043. The cubic root of 61213107 is about 394.1075981394.

The spelling of 61213107 in words is "sixty-one million, two hundred thirteen thousand, one hundred seven".