1126521431 has 32 divisors (see below), whose sum is σ = 1357762560. Its totient is φ = 914457600.

The previous prime is 1126521421. The next prime is 1126521433. The reversal of 1126521431 is 1341256211.

It is not a de Polignac number, because 1126521431 - 2²² = 1122327127 is a prime.

It is a super-2 number, since 2×1126521431² = 2538101069004575522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1126521431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126521433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2294096 + ... + 2294586.

It is an arithmetic number, because the mean of its divisors is an integer number (42430080).

Almost surely, 2^1126521431 is an apocalyptic number.

1126521431 is a deficient number, since it is larger than the sum of its proper divisors (231241129).

1126521431 is a wasteful number, since it uses less digits than its factorization.

1126521431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its digits is 1440, while the sum is 26.

The square root of 1126521431 is about 33563.6921538737. The cubic root of 1126521431 is about 1040.5105453706.

Adding to 1126521431 its reverse (1341256211), we get a palindrome (2467777642).

The spelling of 1126521431 in words is "one billion, one hundred twenty-six million, five hundred twenty-one thousand, four hundred thirty-one".