1023431235 has 16 divisors (see below), whose sum is σ = 1645255680. Its totient is φ = 543241440.

The previous prime is 1023431191. The next prime is 1023431239. The reversal of 1023431235 is 5321343201.

It is not a de Polignac number, because 1023431235 - 2⁷ = 1023431107 is a prime.

It is a super-2 number, since 2×1023431235² = 2094822985547250450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1023431239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158515 + ... + 164844.

It is an arithmetic number, because the mean of its divisors is an integer number (102828480).

Almost surely, 2^1023431235 is an apocalyptic number.

1023431235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1023431235 is a deficient number, since it is larger than the sum of its proper divisors (621824445).

1023431235 is a wasteful number, since it uses less digits than its factorization.

1023431235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323578.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1023431235 is about 31991.1118125019. Note that the first 3 decimals coincide. The cubic root of 1023431235 is about 1007.7501910327.

Adding to 1023431235 its reverse (5321343201), we get a palindrome (6344774436).

The spelling of 1023431235 in words is "one billion, twenty-three million, four hundred thirty-one thousand, two hundred thirty-five".