1031142199 has 4 divisors (see below), whose sum is σ = 1035567936. Its totient is φ = 1026716464.

The previous prime is 1031142197. The next prime is 1031142223. The reversal of 1031142199 is 9912411301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1031142199 - 2¹ = 1031142197 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031142199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031142197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212519 + ... + 2212984.

It is an arithmetic number, because the mean of its divisors is an integer number (258891984).

Almost surely, 2^1031142199 is an apocalyptic number.

1031142199 is a deficient number, since it is larger than the sum of its proper divisors (4425737).

1031142199 is an equidigital number, since it uses as much as digits as its factorization.

1031142199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425736.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1031142199 is about 32111.4029435028. The cubic root of 1031142199 is about 1010.2747999114.

The spelling of 1031142199 in words is "one billion, thirty-one million, one hundred forty-two thousand, one hundred ninety-nine".