61213130 has 16 divisors (see below), whose sum is σ = 120200544. Its totient is φ = 22259280.

The previous prime is 61213091. The next prime is 61213151. The reversal of 61213130 is 3131216.

It is a junction number, because it is equal to n+sod(n) for n = 61213099 and 61213108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278132 + ... + 278351.

It is an arithmetic number, because the mean of its divisors is an integer number (7512534).

Almost surely, 2^61213130 is an apocalyptic number.

61213130 is a deficient number, since it is larger than the sum of its proper divisors (58987414).

61213130 is a wasteful number, since it uses less digits than its factorization.

61213130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556501.

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

The square root of 61213130 is about 7823.8820287630. The cubic root of 61213130 is about 394.1076474996.

Adding to 61213130 its reverse (3131216), we get a palindrome (64344346).

The spelling of 61213130 in words is "sixty-one million, two hundred thirteen thousand, one hundred thirty".