61194831 has 4 divisors (see below), whose sum is σ = 81593112. Its totient is φ = 40796552.

The previous prime is 61194827. The next prime is 61194851. The reversal of 61194831 is 13849116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61194831 - 2² = 61194827 is a prime.

It is a super-2 number, since 2×61194831² = 7489614682237122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61194792 and 61194801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61194851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10199136 + ... + 10199141.

It is an arithmetic number, because the mean of its divisors is an integer number (20398278).

Almost surely, 2^61194831 is an apocalyptic number.

61194831 is a deficient number, since it is larger than the sum of its proper divisors (20398281).

61194831 is a wasteful number, since it uses less digits than its factorization.

61194831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20398280.

The product of its digits is 5184, while the sum is 33.

The square root of 61194831 is about 7822.7125090981. The cubic root of 61194831 is about 394.0683721863.

The spelling of 61194831 in words is "sixty-one million, one hundred ninety-four thousand, eight hundred thirty-one".