1271474431 has 4 divisors (see below), whose sum is σ = 1326755952. Its totient is φ = 1216192912.

The previous prime is 1271474371. The next prime is 1271474437. The reversal of 1271474431 is 1344741721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1271474431 - 2¹¹ = 1271472383 is a prime.

It is a super-2 number, since 2×1271474431² = 3233294457373547522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271474437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27640726 + ... + 27640771.

It is an arithmetic number, because the mean of its divisors is an integer number (331688988).

Almost surely, 2^1271474431 is an apocalyptic number.

1271474431 is a deficient number, since it is larger than the sum of its proper divisors (55281521).

1271474431 is an equidigital number, since it uses as much as digits as its factorization.

1271474431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55281520.

The product of its digits is 18816, while the sum is 34.

The square root of 1271474431 is about 35657.7401274955. The cubic root of 1271474431 is about 1083.3510544057.

The spelling of 1271474431 in words is "one billion, two hundred seventy-one million, four hundred seventy-four thousand, four hundred thirty-one".