31102012127 has 2 divisors, whose sum is σ = 31102012128. Its totient is φ = 31102012126.

The previous prime is 31102012121. The next prime is 31102012169. The reversal of 31102012127 is 72121020113.

It is a weak prime.

It is an emirp because it is prime and its reverse (72121020113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31102012127 - 2¹² = 31102008031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31102012099 and 31102012108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31102012121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551006063 + 15551006064.

It is an arithmetic number, because the mean of its divisors is an integer number (15551006064).

Almost surely, 2^31102012127 is an apocalyptic number.

31102012127 is a deficient number, since it is larger than the sum of its proper divisors (1).

31102012127 is an equidigital number, since it uses as much as digits as its factorization.

31102012127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The spelling of 31102012127 in words is "thirty-one billion, one hundred two million, twelve thousand, one hundred twenty-seven".