1121063631 has 32 divisors (see below), whose sum is σ = 1666467840. Its totient is φ = 667095264.

The previous prime is 1121063609. The next prime is 1121063663. The reversal of 1121063631 is 1363601211.

It is not a de Polignac number, because 1121063631 - 2¹⁵ = 1121030863 is a prime.

It is a super-2 number, since 2×1121063631² = 2513567329501808322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121063731) 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, 81456 + ... + 94218.

It is an arithmetic number, because the mean of its divisors is an integer number (52077120).

Almost surely, 2^1121063631 is an apocalyptic number.

1121063631 is a deficient number, since it is larger than the sum of its proper divisors (545404209).

1121063631 is a wasteful number, since it uses less digits than its factorization.

1121063631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12875.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1121063631 is about 33482.2883178555. The cubic root of 1121063631 is about 1038.8274602693.

Adding to 1121063631 its reverse (1363601211), we get a palindrome (2484664842).

The spelling of 1121063631 in words is "one billion, one hundred twenty-one million, sixty-three thousand, six hundred thirty-one".