1235663273 has 12 divisors (see below), whose sum is σ = 1353076380. Its totient is φ = 1127782656.

The previous prime is 1235663267. The next prime is 1235663279. The reversal of 1235663273 is 3723665321.

It is an interprime number because it is at equal distance from previous prime (1235663267) and next prime (1235663279).

It can be written as a sum of positive squares in 6 ways, for example, as 540655504 + 695007769 = 23252^2 + 26363^2 .

It is not a de Polignac number, because 1235663273 - 2²⁰ = 1234614697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235663279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26036 + ... + 56117.

It is an arithmetic number, because the mean of its divisors is an integer number (112756365).

Almost surely, 2^1235663273 is an apocalyptic number.

1235663273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1235663273 is a deficient number, since it is larger than the sum of its proper divisors (117413107).

1235663273 is an equidigital number, since it uses as much as digits as its factorization.

1235663273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82268 (or 82255 counting only the distinct ones).

The product of its digits is 136080, while the sum is 38.

The square root of 1235663273 is about 35152.0024038461. The cubic root of 1235663273 is about 1073.0831600519.

The spelling of 1235663273 in words is "one billion, two hundred thirty-five million, six hundred sixty-three thousand, two hundred seventy-three".