31000111109459 has 2 divisors, whose sum is σ = 31000111109460. Its totient is φ = 31000111109458.

The previous prime is 31000111109417. The next prime is 31000111109477. The reversal of 31000111109459 is 95490111100013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31000111109459 - 2⁸ = 31000111109203 is a prime.

It is a super-2 number, since 2×31000111109459² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31000111109159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15500055554729 + 15500055554730.

It is an arithmetic number, because the mean of its divisors is an integer number (15500055554730).

Almost surely, 2^{31000111109459} is an apocalyptic number.

31000111109459 is a deficient number, since it is larger than the sum of its proper divisors (1).

31000111109459 is an equidigital number, since it uses as much as digits as its factorization.

31000111109459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 35.

The spelling of 31000111109459 in words is "thirty-one trillion, one hundred eleven million, one hundred nine thousand, four hundred fifty-nine".