1275023003381 has 2 divisors, whose sum is σ = 1275023003382. Its totient is φ = 1275023003380.

The previous prime is 1275023003291. The next prime is 1275023003383. The reversal of 1275023003381 is 1833003205721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 798279706225 + 476743297156 = 893465^2 + 690466^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275023003381 - 2³⁸ = 1000145096437 is a prime.

It is a super-2 number, since 2×1275023003381² (a number of 25 digits) contains 22 as substring.

Together with 1275023003383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275023003383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637511501690 + 637511501691.

It is an arithmetic number, because the mean of its divisors is an integer number (637511501691).

Almost surely, 2^{1275023003381} is an apocalyptic number.

It is an amenable number.

1275023003381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275023003381 is an equidigital number, since it uses as much as digits as its factorization.

1275023003381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 1275023003381 in words is "one trillion, two hundred seventy-five billion, twenty-three million, three thousand, three hundred eighty-one".