1031198231 has 8 divisors (see below), whose sum is σ = 1179818880. Its totient is φ = 882904248.

The previous prime is 1031198213. The next prime is 1031198237. The reversal of 1031198231 is 1328911301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031198231 is a prime.

It is a super-2 number, since 2×1031198231² = 2126739583235058722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031198194 and 1031198203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031198237) 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 7 ways as a sum of consecutive naturals, for example, 74861 + ... + 87558.

It is an arithmetic number, because the mean of its divisors is an integer number (147477360).

Almost surely, 2^1031198231 is an apocalyptic number.

1031198231 is a deficient number, since it is larger than the sum of its proper divisors (148620649).

1031198231 is an equidigital number, since it uses as much as digits as its factorization.

1031198231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163333.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1031198231 is about 32112.2753943099. The cubic root of 1031198231 is about 1010.2930989369.

The spelling of 1031198231 in words is "one billion, thirty-one million, one hundred ninety-eight thousand, two hundred thirty-one".