1031112231 has 16 divisors (see below), whose sum is σ = 1401326304. Its totient is φ = 674279424.

The previous prime is 1031112227. The next prime is 1031112253. The reversal of 1031112231 is 1322111301.

It is a happy number.

It is not a de Polignac number, because 1031112231 - 2² = 1031112227 is a prime.

It is a super-2 number, since 2×1031112231² = 2126384865835594722, 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 1031112231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031112211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17205 + ... + 48561.

It is an arithmetic number, because the mean of its divisors is an integer number (87582894).

Almost surely, 2^1031112231 is an apocalyptic number.

1031112231 is a deficient number, since it is larger than the sum of its proper divisors (370214073).

1031112231 is a wasteful number, since it uses less digits than its factorization.

1031112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31570.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1031112231 is about 32110.9363145954. The cubic root of 1031112231 is about 1010.2650126391.

Adding to 1031112231 its reverse (1322111301), we get a palindrome (2353223532).

The spelling of 1031112231 in words is "one billion, thirty-one million, one hundred twelve thousand, two hundred thirty-one".