1001042331 has 16 divisors (see below), whose sum is σ = 1443308544. Its totient is φ = 614739584.

The previous prime is 1001042309. The next prime is 1001042351. The reversal of 1001042331 is 1332401001.

It is not a de Polignac number, because 1001042331 - 2⁵ = 1001042299 is a prime.

It is a super-2 number, since 2×1001042331² = 2004171496907827122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001042331.

It is not an unprimeable number, because it can be changed into a prime (1001042351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206415 + ... + 211208.

It is an arithmetic number, because the mean of its divisors is an integer number (90206784).

Almost surely, 2^1001042331 is an apocalyptic number.

1001042331 is a deficient number, since it is larger than the sum of its proper divisors (442266213).

1001042331 is a wasteful number, since it uses less digits than its factorization.

1001042331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417690.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1001042331 is about 31639.2530095134. The cubic root of 1001042331 is about 1000.3473230194.

Adding to 1001042331 its reverse (1332401001), we get a palindrome (2333443332).

The spelling of 1001042331 in words is "one billion, one million, forty-two thousand, three hundred thirty-one".