1031442321 has 48 divisors (see below), whose sum is σ = 1713325056. Its totient is φ = 540416448.

The previous prime is 1031442319. The next prime is 1031442361. The reversal of 1031442321 is 1232441301.

It is not a de Polignac number, because 1031442321 - 2¹ = 1031442319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1031442301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 577596 + ... + 579378.

It is an arithmetic number, because the mean of its divisors is an integer number (35694272).

Almost surely, 2^1031442321 is an apocalyptic number.

It is an amenable number.

1031442321 is a deficient number, since it is larger than the sum of its proper divisors (681882735).

1031442321 is a wasteful number, since it uses less digits than its factorization.

1031442321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1031442321 is about 32116.0757409743. The cubic root of 1031442321 is about 1010.3728065302.

Adding to 1031442321 its reverse (1232441301), we get a palindrome (2263883622).

The spelling of 1031442321 in words is "one billion, thirty-one million, four hundred forty-two thousand, three hundred twenty-one".