31023030111109 has 2 divisors, whose sum is σ = 31023030111110. Its totient is φ = 31023030111108.

The previous prime is 31023030111097. The next prime is 31023030111113. The reversal of 31023030111109 is 90111103032013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24227284982884 + 6795745128225 = 4922122^2 + 2606865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023030111109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023030151109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511515055554 + 15511515055555.

It is an arithmetic number, because the mean of its divisors is an integer number (15511515055555).

Almost surely, 2^{31023030111109} is an apocalyptic number.

It is an amenable number.

31023030111109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023030111109 is an equidigital number, since it uses as much as digits as its factorization.

31023030111109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The spelling of 31023030111109 in words is "thirty-one trillion, twenty-three billion, thirty million, one hundred eleven thousand, one hundred nine".