1271431070 has 32 divisors (see below), whose sum is σ = 2816710848. Its totient is φ = 402386688.

The previous prime is 1271431067. The next prime is 1271431087. The reversal of 1271431070 is 701341721.

It is a happy number.

It is a super-2 number, since 2×1271431070² = 3233073931522689800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697679 + ... + 699498.

It is an arithmetic number, because the mean of its divisors is an integer number (88022214).

Almost surely, 2^1271431070 is an apocalyptic number.

1271431070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1271431070 is an abundant number, since it is smaller than the sum of its proper divisors (1545279778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271431070 is a wasteful number, since it uses less digits than its factorization.

1271431070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397204.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 1271431070 is about 35657.1321056531. The cubic root of 1271431070 is about 1083.3387391183.

Adding to 1271431070 its reverse (701341721), we get a palindrome (1972772791).

The spelling of 1271431070 in words is "one billion, two hundred seventy-one million, four hundred thirty-one thousand, seventy".