1273231431 has 12 divisors (see below), whose sum is σ = 1839427200. Its totient is φ = 848675520.

The previous prime is 1273231429. The next prime is 1273231489. The reversal of 1273231431 is 1341323721.

It is a happy number.

It is not a de Polignac number, because 1273231431 - 2¹ = 1273231429 is a prime.

It is a super-3 number, since 3×1273231431³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1273231395 and 1273231404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273231931) 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, 80895 + ... + 95343.

It is an arithmetic number, because the mean of its divisors is an integer number (153285600).

Almost surely, 2^1273231431 is an apocalyptic number.

1273231431 is a deficient number, since it is larger than the sum of its proper divisors (566195769).

1273231431 is a wasteful number, since it uses less digits than its factorization.

1273231431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24246 (or 24243 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 1273231431 is about 35682.3686293385. The cubic root of 1273231431 is about 1083.8498379865.

The spelling of 1273231431 in words is "one billion, two hundred seventy-three million, two hundred thirty-one thousand, four hundred thirty-one".