31002113203123 has 2 divisors, whose sum is σ = 31002113203124. Its totient is φ = 31002113203122.

The previous prime is 31002113203099. The next prime is 31002113203129. The reversal of 31002113203123 is 32130231120013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31002113203123 - 2⁹ = 31002113202611 is a prime.

It is a super-2 number, since 2×31002113203123² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31002113203094 and 31002113203103.

It is not a weakly prime, because it can be changed into another prime (31002113203129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15501056601561 + 15501056601562.

It is an arithmetic number, because the mean of its divisors is an integer number (15501056601562).

Almost surely, 2^{31002113203123} is an apocalyptic number.

31002113203123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31002113203123 is an equidigital number, since it uses as much as digits as its factorization.

31002113203123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31002113203123 its reverse (32130231120013), we get a palindrome (63132344323136).

The spelling of 31002113203123 in words is "thirty-one trillion, two billion, one hundred thirteen million, two hundred three thousand, one hundred twenty-three".