10031021977 has 2 divisors, whose sum is σ = 10031021978. Its totient is φ = 10031021976.

The previous prime is 10031021941. The next prime is 10031022007. The reversal of 10031021977 is 77912013001.

10031021977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5240167321 + 4790854656 = 72389^2 + 69216^2 .

It is a cyclic number.

It is not a de Polignac number, because 10031021977 - 2³¹ = 7883538329 is a prime.

It is not a weakly prime, because it can be changed into another prime (10031021477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015510988 + 5015510989.

It is an arithmetic number, because the mean of its divisors is an integer number (5015510989).

Almost surely, 2^10031021977 is an apocalyptic number.

It is an amenable number.

10031021977 is a deficient number, since it is larger than the sum of its proper divisors (1).

10031021977 is an equidigital number, since it uses as much as digits as its factorization.

10031021977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 31.

Adding to 10031021977 its reverse (77912013001), we get a palindrome (87943034978).

The spelling of 10031021977 in words is "ten billion, thirty-one million, twenty-one thousand, nine hundred seventy-seven".