31020078841 has 2 divisors, whose sum is σ = 31020078842. Its totient is φ = 31020078840.

The previous prime is 31020078809. The next prime is 31020078877. The reversal of 31020078841 is 14887002013.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15988338025 + 15031740816 = 126445^2 + 122604^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020078841 - 2⁵ = 31020078809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31020078797 and 31020078806.

It is not a weakly prime, because it can be changed into another prime (31020078941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510039420 + 15510039421.

It is an arithmetic number, because the mean of its divisors is an integer number (15510039421).

Almost surely, 2^31020078841 is an apocalyptic number.

It is an amenable number.

31020078841 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020078841 is an equidigital number, since it uses as much as digits as its factorization.

31020078841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 31020078841 in words is "thirty-one billion, twenty million, seventy-eight thousand, eight hundred forty-one".