1000013331 has 4 divisors (see below), whose sum is σ = 1333351112. Its totient is φ = 666675552.

The previous prime is 1000013323. The next prime is 1000013369. The reversal of 1000013331 is 1333100001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333100001 = 3 ⋅444366667.

It is not a de Polignac number, because 1000013331 - 2³ = 1000013323 is a prime.

It is a super-2 number, since 2×1000013331² = 2000053324355431122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000053331) 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 3 ways as a sum of consecutive naturals, for example, 166668886 + ... + 166668891.

It is an arithmetic number, because the mean of its divisors is an integer number (333337778).

Almost surely, 2^1000013331 is an apocalyptic number.

1000013331 is a deficient number, since it is larger than the sum of its proper divisors (333337781).

1000013331 is an equidigital number, since it uses as much as digits as its factorization.

1000013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333337780.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 1000013331 is about 31622.9873825988. The cubic root of 1000013331 is about 1000.0044436469.

Adding to 1000013331 its reverse (1333100001), we get a palindrome (2333113332).

The spelling of 1000013331 in words is "one billion, thirteen thousand, three hundred thirty-one".