1031131323 has 16 divisors (see below), whose sum is σ = 1534003200. Its totient is φ = 684540360.

The previous prime is 1031131301. The next prime is 1031131333. The reversal of 1031131323 is 3231311301.

It is a happy number.

1031131323 is a `hidden beast` number, since 1 + 0 + 311 + 31 + 323 = 666.

It is not a de Polignac number, because 1031131323 - 2⁸ = 1031131067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031131296 and 1031131305.

It is not an unprimeable number, because it can be changed into a prime (1031131333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73443 + ... + 86348.

It is an arithmetic number, because the mean of its divisors is an integer number (95875200).

Almost surely, 2^1031131323 is an apocalyptic number.

1031131323 is a deficient number, since it is larger than the sum of its proper divisors (502871877).

1031131323 is a wasteful number, since it uses less digits than its factorization.

1031131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160039 (or 160033 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1031131323 is about 32111.2335951143. The cubic root of 1031131323 is about 1010.2712479321.

Adding to 1031131323 its reverse (3231311301), we get a palindrome (4262442624).

The spelling of 1031131323 in words is "one billion, thirty-one million, one hundred thirty-one thousand, three hundred twenty-three".