1031331442 has 4 divisors (see below), whose sum is σ = 1546997166. Its totient is φ = 515665720.

The previous prime is 1031331439. The next prime is 1031331461. The reversal of 1031331442 is 2441331301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2441331301 = 6709 ⋅363889.

It can be written as a sum of positive squares in only one way, i.e., 710169201 + 321162241 = 26649^2 + 17921^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 257832859 + ... + 257832862.

Almost surely, 2^1031331442 is an apocalyptic number.

1031331442 is a deficient number, since it is larger than the sum of its proper divisors (515665724).

1031331442 is an equidigital number, since it uses as much as digits as its factorization.

1031331442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515665723.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1031331442 is about 32114.3494718483. The cubic root of 1031331442 is about 1010.3366005500.

Adding to 1031331442 its reverse (2441331301), we get a palindrome (3472662743).

The spelling of 1031331442 in words is "one billion, thirty-one million, three hundred thirty-one thousand, four hundred forty-two".