1273541431 has 2 divisors, whose sum is σ = 1273541432. Its totient is φ = 1273541430.

The previous prime is 1273541407. The next prime is 1273541497. The reversal of 1273541431 is 1341453721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1273541431 - 2¹¹ = 1273539383 is a prime.

It is a super-2 number, since 2×1273541431² = 3243815552947055522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1273541393 and 1273541402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1273541231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636770715 + 636770716.

It is an arithmetic number, because the mean of its divisors is an integer number (636770716).

Almost surely, 2^1273541431 is an apocalyptic number.

1273541431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273541431 is an equidigital number, since it uses as much as digits as its factorization.

1273541431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 1273541431 is about 35686.7122469975. The cubic root of 1273541431 is about 1083.9377942885.

The spelling of 1273541431 in words is "one billion, two hundred seventy-three million, five hundred forty-one thousand, four hundred thirty-one".