1127122631 has 4 divisors (see below), whose sum is σ = 1127232000. Its totient is φ = 1127013264.

The previous prime is 1127122603. The next prime is 1127122663. The reversal of 1127122631 is 1362217211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1362217211 = 5879 ⋅231709.

It is a cyclic number.

It is not a de Polignac number, because 1127122631 - 2²² = 1122928327 is a prime.

It is a super-2 number, since 2×1127122631² = 2540810850624724322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1127122631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127122691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37406 + ... + 60443.

It is an arithmetic number, because the mean of its divisors is an integer number (281808000).

Almost surely, 2^1127122631 is an apocalyptic number.

1127122631 is a deficient number, since it is larger than the sum of its proper divisors (109369).

1127122631 is an equidigital number, since it uses as much as digits as its factorization.

1127122631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109368.

The product of its digits is 1008, while the sum is 26.

The square root of 1127122631 is about 33572.6470657290. The cubic root of 1127122631 is about 1040.6956117392.

Adding to 1127122631 its reverse (1362217211), we get a palindrome (2489339842).

The spelling of 1127122631 in words is "one billion, one hundred twenty-seven million, one hundred twenty-two thousand, six hundred thirty-one".