31103130123287 has 2 divisors, whose sum is σ = 31103130123288. Its totient is φ = 31103130123286.

The previous prime is 31103130123283. The next prime is 31103130123337. The reversal of 31103130123287 is 78232103130113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31103130123287 - 2² = 31103130123283 is a prime.

It is a super-2 number, since 2×31103130123287² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31103130123283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551565061643 + 15551565061644.

It is an arithmetic number, because the mean of its divisors is an integer number (15551565061644).

Almost surely, 2^{31103130123287} is an apocalyptic number.

31103130123287 is a deficient number, since it is larger than the sum of its proper divisors (1).

31103130123287 is an equidigital number, since it uses as much as digits as its factorization.

31103130123287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 31103130123287 in words is "thirty-one trillion, one hundred three billion, one hundred thirty million, one hundred twenty-three thousand, two hundred eighty-seven".