1005232431 has 16 divisors (see below), whose sum is σ = 1542968064. Its totient is φ = 570224064.

The previous prime is 1005232399. The next prime is 1005232439. The reversal of 1005232431 is 1342325001.

It is not a de Polignac number, because 1005232431 - 2⁵ = 1005232399 is a prime.

It is a super-2 number, since 2×1005232431² = 2020984480668339522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1005232398 and 1005232407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005232439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171825 + ... + 177578.

It is an arithmetic number, because the mean of its divisors is an integer number (96435504).

Almost surely, 2^1005232431 is an apocalyptic number.

1005232431 is a deficient number, since it is larger than the sum of its proper divisors (537735633).

1005232431 is a wasteful number, since it uses less digits than its factorization.

1005232431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349550.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1005232431 is about 31705.4006598245. The cubic root of 1005232431 is about 1001.7411104417.

Adding to 1005232431 its reverse (1342325001), we get a palindrome (2347557432).

The spelling of 1005232431 in words is "one billion, five million, two hundred thirty-two thousand, four hundred thirty-one".