61031230387 has 2 divisors, whose sum is σ = 61031230388. Its totient is φ = 61031230386.

The previous prime is 61031230331. The next prime is 61031230391. The reversal of 61031230387 is 78303213016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61031230387 - 2⁷ = 61031230259 is a prime.

It is a super-2 number, since 2×61031230387² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61031230327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515615193 + 30515615194.

It is an arithmetic number, because the mean of its divisors is an integer number (30515615194).

Almost surely, 2^61031230387 is an apocalyptic number.

61031230387 is a deficient number, since it is larger than the sum of its proper divisors (1).

61031230387 is an equidigital number, since it uses as much as digits as its factorization.

61031230387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 61031230387 in words is "sixty-one billion, thirty-one million, two hundred thirty thousand, three hundred eighty-seven".