31300319977 has 2 divisors, whose sum is σ = 31300319978. Its totient is φ = 31300319976.

The previous prime is 31300319893. The next prime is 31300320013. The reversal of 31300319977 is 77991300313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30210263721 + 1090056256 = 173811^2 + 33016^2 .

It is a cyclic number.

It is not a de Polignac number, because 31300319977 - 2¹⁹ = 31299795689 is a prime.

It is a super-3 number, since 3×31300319977³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31300319077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650159988 + 15650159989.

It is an arithmetic number, because the mean of its divisors is an integer number (15650159989).

Almost surely, 2^31300319977 is an apocalyptic number.

It is an amenable number.

31300319977 is a deficient number, since it is larger than the sum of its proper divisors (1).

31300319977 is an equidigital number, since it uses as much as digits as its factorization.

31300319977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107163, while the sum is 43.

The spelling of 31300319977 in words is "thirty-one billion, three hundred million, three hundred nineteen thousand, nine hundred seventy-seven".