127227491391031 has 2 divisors, whose sum is σ = 127227491391032. Its totient is φ = 127227491391030.

The previous prime is 127227491390981. The next prime is 127227491391097. The reversal of 127227491391031 is 130193194722721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127227491391031 - 2¹¹ = 127227491388983 is a prime.

It is a super-2 number, since 2×127227491391031² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 127227491391031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127227491391731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63613745695515 + 63613745695516.

It is an arithmetic number, because the mean of its divisors is an integer number (63613745695516).

Almost surely, 2^{127227491391031} is an apocalyptic number.

127227491391031 is a deficient number, since it is larger than the sum of its proper divisors (1).

127227491391031 is an equidigital number, since it uses as much as digits as its factorization.

127227491391031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 127227491391031 in words is "one hundred twenty-seven trillion, two hundred twenty-seven billion, four hundred ninety-one million, three hundred ninety-one thousand, thirty-one".