1031131023 has 24 divisors (see below), whose sum is σ = 1514010240. Its totient is φ = 623769120.

The previous prime is 1031131019. The next prime is 1031131027. The reversal of 1031131023 is 3201311301.

It is an interprime number because it is at equal distance from previous prime (1031131019) and next prime (1031131027).

It is not a de Polignac number, because 1031131023 - 2² = 1031131019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031130993 and 1031131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031131027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12678 + ... + 47148.

It is an arithmetic number, because the mean of its divisors is an integer number (63083760).

Almost surely, 2^1031131023 is an apocalyptic number.

1031131023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1031131023 is a deficient number, since it is larger than the sum of its proper divisors (482879217).

1031131023 is a wasteful number, since it uses less digits than its factorization.

1031131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34559 (or 34546 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1031131023 is about 32111.2289238515. The cubic root of 1031131023 is about 1010.2711499551.

Adding to 1031131023 its reverse (3201311301), we get a palindrome (4232442324).

The spelling of 1031131023 in words is "one billion, thirty-one million, one hundred thirty-one thousand, twenty-three".