1000431023 has 4 divisors (see below), whose sum is σ = 1043928048. Its totient is φ = 956934000.

The previous prime is 1000431013. The next prime is 1000431043. The reversal of 1000431023 is 3201340001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3201340001 = 19 ⋅168491579.

It is a cyclic number.

It is not a de Polignac number, because 1000431023 - 2¹⁰ = 1000429999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000430989 and 1000431007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000431013) 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, 21748478 + ... + 21748523.

It is an arithmetic number, because the mean of its divisors is an integer number (260982012).

Almost surely, 2^1000431023 is an apocalyptic number.

1000431023 is a deficient number, since it is larger than the sum of its proper divisors (43497025).

1000431023 is an equidigital number, since it uses as much as digits as its factorization.

1000431023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43497024.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1000431023 is about 31629.5909394984. The cubic root of 1000431023 is about 1000.1436536960.

Adding to 1000431023 its reverse (3201340001), we get a palindrome (4201771024).

The spelling of 1000431023 in words is "one billion, four hundred thirty-one thousand, twenty-three".