1000023131 has 8 divisors (see below), whose sum is σ = 1018988880. Its totient is φ = 981199872.

The previous prime is 1000023121. The next prime is 1000023139. The reversal of 1000023131 is 1313200001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000023131 is a prime.

It is a super-2 number, since 2×1000023131² = 2000092525070086322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000023139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21401 + ... + 49578.

It is an arithmetic number, because the mean of its divisors is an integer number (127373610).

Almost surely, 2^1000023131 is an apocalyptic number.

1000023131 is a deficient number, since it is larger than the sum of its proper divisors (18965749).

1000023131 is an equidigital number, since it uses as much as digits as its factorization.

1000023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71245.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1000023131 is about 31623.1423327917. The cubic root of 1000023131 is about 1000.0077102739.

Adding to 1000023131 its reverse (1313200001), we get a palindrome (2313223132).

The spelling of 1000023131 in words is "one billion, twenty-three thousand, one hundred thirty-one".