1071531265 has 36 divisors (see below), whose sum is σ = 1513520316. Its totient is φ = 726128256.

The previous prime is 1071531247. The next prime is 1071531271. The reversal of 1071531265 is 5621351701.

It can be written as a sum of positive squares in 6 ways, for example, as 36493681 + 1035037584 = 6041^2 + 32172^2 .

It is not a de Polignac number, because 1071531265 - 2⁹ = 1071530753 is a prime.

It is a super-2 number, since 2×1071531265² = 2296358503745000450, 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 35 ways as a sum of consecutive naturals, for example, 5439147 + ... + 5439343.

It is an arithmetic number, because the mean of its divisors is an integer number (42042231).

Almost surely, 2^1071531265 is an apocalyptic number.

It is an amenable number.

1071531265 is a deficient number, since it is larger than the sum of its proper divisors (441989051).

1071531265 is an equidigital number, since it uses as much as digits as its factorization.

1071531265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1071531265 is about 32734.2521680273. The cubic root of 1071531265 is about 1023.2967994281.

Adding to 1071531265 its reverse (5621351701), we get a palindrome (6692882966).

The spelling of 1071531265 in words is "one billion, seventy-one million, five hundred thirty-one thousand, two hundred sixty-five".