61130111 has 8 divisors (see below), whose sum is σ = 70254720. Its totient is φ = 52103448.

The previous prime is 61130107. The next prime is 61130119. The reversal of 61130111 is 11103116.

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 61130111 - 2² = 61130107 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 (61130119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23141 + ... + 25646.

It is an arithmetic number, because the mean of its divisors is an integer number (8781840).

Almost surely, 2^61130111 is an apocalyptic number.

61130111 is a deficient number, since it is larger than the sum of its proper divisors (9124609).

61130111 is a wasteful number, since it uses less digits than its factorization.

61130111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48973.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 61130111 is about 7818.5747422404. The cubic root of 61130111 is about 393.9294002011.

Adding to 61130111 its reverse (11103116), we get a palindrome (72233227).

The spelling of 61130111 in words is "sixty-one million, one hundred thirty thousand, one hundred eleven".