1263774131 has 2 divisors, whose sum is σ = 1263774132. Its totient is φ = 1263774130.

The previous prime is 1263774107. The next prime is 1263774133. The reversal of 1263774131 is 1314773621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1263774131 - 2¹⁸ = 1263511987 is a prime.

It is a super-2 number, since 2×1263774131² = 3194250108369610322, which contains 22 as substring.

Together with 1263774133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263774091 and 1263774100.

It is not a weakly prime, because it can be changed into another prime (1263774133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631887065 + 631887066.

It is an arithmetic number, because the mean of its divisors is an integer number (631887066).

Almost surely, 2^1263774131 is an apocalyptic number.

1263774131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263774131 is an equidigital number, since it uses as much as digits as its factorization.

1263774131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 1263774131 is about 35549.6009963544. The cubic root of 1263774131 is about 1081.1596286259.

It can be divided in two parts, 12637 and 74131, that added together give a palindrome (86768).

The spelling of 1263774131 in words is "one billion, two hundred sixty-three million, seven hundred seventy-four thousand, one hundred thirty-one".