1001431428 has 24 divisors (see below), whose sum is σ = 2369586240. Its totient is φ = 329108640.

The previous prime is 1001431411. The next prime is 1001431439. The reversal of 1001431428 is 8241341001.

It is a super-2 number, since 2×1001431428² = 2005729809972238368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001431398 and 1001431407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586843 + ... + 588546.

It is an arithmetic number, because the mean of its divisors is an integer number (98732760).

Almost surely, 2^1001431428 is an apocalyptic number.

It is an amenable number.

1001431428 is an abundant number, since it is smaller than the sum of its proper divisors (1368154812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001431428 is a wasteful number, since it uses less digits than its factorization.

1001431428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175467 (or 1175465 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1001431428 is about 31645.4013720793. The cubic root of 1001431428 is about 1000.4769151824.

Adding to 1001431428 its reverse (8241341001), we get a palindrome (9242772429).

The spelling of 1001431428 in words is "one billion, one million, four hundred thirty-one thousand, four hundred twenty-eight".