1023430431 has 4 divisors (see below), whose sum is σ = 1364573912. Its totient is φ = 682286952.

The previous prime is 1023430417. The next prime is 1023430439. The reversal of 1023430431 is 1340343201.

1023430431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1023430431 - 2⁵ = 1023430399 is a prime.

It is a super-3 number, since 3×1023430431³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023430398 and 1023430407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023430439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170571736 + ... + 170571741.

It is an arithmetic number, because the mean of its divisors is an integer number (341143478).

Almost surely, 2^1023430431 is an apocalyptic number.

1023430431 is a deficient number, since it is larger than the sum of its proper divisors (341143481).

1023430431 is an equidigital number, since it uses as much as digits as its factorization.

1023430431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341143480.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1023430431 is about 31991.0992465092. The cubic root of 1023430431 is about 1007.7499271389.

Adding to 1023430431 its reverse (1340343201), we get a palindrome (2363773632).

The spelling of 1023430431 in words is "one billion, twenty-three million, four hundred thirty thousand, four hundred thirty-one".