1273231455 has 32 divisors (see below), whose sum is σ = 2094123456. Its totient is φ = 660301824.

The previous prime is 1273231429. The next prime is 1273231489. The reversal of 1273231455 is 5541323721.

It is not a de Polignac number, because 1273231455 - 2⁶ = 1273231391 is a prime.

It is a super-2 number, since 2×1273231455² = 3242236676002834050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82749 + ... + 96921.

It is an arithmetic number, because the mean of its divisors is an integer number (65441358).

Almost surely, 2^1273231455 is an apocalyptic number.

1273231455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1273231455 is a deficient number, since it is larger than the sum of its proper divisors (820892001).

1273231455 is a wasteful number, since it uses less digits than its factorization.

1273231455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14347.

The product of its digits is 25200, while the sum is 33.

The square root of 1273231455 is about 35682.3689656390. The cubic root of 1273231455 is about 1083.8498447966.

It can be divided in two parts, 127323 and 1455, that added together give a triangular number (128778 = T₅₀₇).

The spelling of 1273231455 in words is "one billion, two hundred seventy-three million, two hundred thirty-one thousand, four hundred fifty-five".