1378276376231 has 2 divisors, whose sum is σ = 1378276376232. Its totient is φ = 1378276376230.

The previous prime is 1378276376219. The next prime is 1378276376293. The reversal of 1378276376231 is 1326736728731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1378276376231 is a prime.

It is a super-2 number, since 2×1378276376231² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378276376131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689138188115 + 689138188116.

It is an arithmetic number, because the mean of its divisors is an integer number (689138188116).

Almost surely, 2^{1378276376231} is an apocalyptic number.

1378276376231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378276376231 is an equidigital number, since it uses as much as digits as its factorization.

1378276376231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 56.

The spelling of 1378276376231 in words is "one trillion, three hundred seventy-eight billion, two hundred seventy-six million, three hundred seventy-six thousand, two hundred thirty-one".