61308760231 has 4 divisors (see below), whose sum is σ = 61372162192. Its totient is φ = 61245358272.

The previous prime is 61308760217. The next prime is 61308760267. The reversal of 61308760231 is 13206780316.

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 61308760231 - 2⁵ = 61308760199 is a prime.

It is a super-2 number, since 2×61308760231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61308761231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31699530 + ... + 31701463.

It is an arithmetic number, because the mean of its divisors is an integer number (15343040548).

Almost surely, 2^61308760231 is an apocalyptic number.

61308760231 is a deficient number, since it is larger than the sum of its proper divisors (63401961).

61308760231 is an equidigital number, since it uses as much as digits as its factorization.

61308760231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63401960.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 61308760231 in words is "sixty-one billion, three hundred eight million, seven hundred sixty thousand, two hundred thirty-one".