1071231290 has 32 divisors (see below), whose sum is σ = 2013066000. Its totient is φ = 409909248.

The previous prime is 1071231281. The next prime is 1071231311. The reversal of 1071231290 is 921321701.

It can be written as a sum of positive squares in 8 ways, for example, as 860894281 + 210337009 = 29341^2 + 14503^2 .

It is a super-2 number, since 2×1071231290² = 2295072953350128200, which contains 22 as substring.

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, 14666 + ... + 48554.

Almost surely, 2^1071231290 is an apocalyptic number.

1071231290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1071231290 is a deficient number, since it is larger than the sum of its proper divisors (941834710).

1071231290 is a wasteful number, since it uses less digits than its factorization.

1071231290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34034.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1071231290 is about 32729.6698730678. The cubic root of 1071231290 is about 1023.2012999260.

Adding to 1071231290 its reverse (921321701), we get a palindrome (1992552991).

The spelling of 1071231290 in words is "one billion, seventy-one million, two hundred thirty-one thousand, two hundred ninety".