1031122431 has 12 divisors (see below), whose sum is σ = 1491246120. Its totient is φ = 686562480.

The previous prime is 1031122427. The next prime is 1031122481. The reversal of 1031122431 is 1342211301.

It is not a de Polignac number, because 1031122431 - 2² = 1031122427 is a prime.

It is a super-2 number, since 2×1031122431² = 2126426935422699522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031122481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63336 + ... + 77933.

It is an arithmetic number, because the mean of its divisors is an integer number (124270510).

Almost surely, 2^1031122431 is an apocalyptic number.

1031122431 is a deficient number, since it is larger than the sum of its proper divisors (460123689).

1031122431 is a wasteful number, since it uses less digits than its factorization.

1031122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142086 (or 142083 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1031122431 is about 32111.0951385966. The cubic root of 1031122431 is about 1010.2683438863.

Adding to 1031122431 its reverse (1342211301), we get a palindrome (2373333732).

The spelling of 1031122431 in words is "one billion, thirty-one million, one hundred twenty-two thousand, four hundred thirty-one".