1263353431 has 2 divisors, whose sum is σ = 1263353432. Its totient is φ = 1263353430.

The previous prime is 1263353417. The next prime is 1263353437. The reversal of 1263353431 is 1343533621.

It is a strong prime.

It is an emirp because it is prime and its reverse (1343533621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1263353431 - 2¹⁹ = 1262829143 is a prime.

It is a super-2 number, since 2×1263353431² = 3192123783238943522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1263353393 and 1263353402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263353437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631676715 + 631676716.

It is an arithmetic number, because the mean of its divisors is an integer number (631676716).

Almost surely, 2^1263353431 is an apocalyptic number.

1263353431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263353431 is an equidigital number, since it uses as much as digits as its factorization.

1263353431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 31.

The square root of 1263353431 is about 35543.6834191393. The cubic root of 1263353431 is about 1081.0396455991.

The spelling of 1263353431 in words is "one billion, two hundred sixty-three million, three hundred fifty-three thousand, four hundred thirty-one".