1031131213 has 8 divisors (see below), whose sum is σ = 1182918528. Its totient is φ = 880464624.

The previous prime is 1031131183. The next prime is 1031131267. The reversal of 1031131213 is 3121311301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1031131213 - 2⁹ = 1031130701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031131513) 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 7 ways as a sum of consecutive naturals, for example, 278206 + ... + 281887.

It is an arithmetic number, because the mean of its divisors is an integer number (147864816).

Almost surely, 2^1031131213 is an apocalyptic number.

It is an amenable number.

1031131213 is a deficient number, since it is larger than the sum of its proper divisors (151787315).

1031131213 is an equidigital number, since it uses as much as digits as its factorization.

1031131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560363.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1031131213 is about 32111.2318823181. The cubic root of 1031131213 is about 1010.2712120072.

Adding to 1031131213 its reverse (3121311301), we get a palindrome (4152442514).

The spelling of 1031131213 in words is "one billion, thirty-one million, one hundred thirty-one thousand, two hundred thirteen".