1428743031 has 8 divisors (see below), whose sum is σ = 1951454064. Its totient is φ = 929263680.

The previous prime is 1428743027. The next prime is 1428743039. The reversal of 1428743031 is 1303478241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1428743031 - 2² = 1428743027 is a prime.

It is a super-2 number, since 2×1428743031² = 4082613297262133922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1428742983 and 1428743001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428743039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5807776 + ... + 5808021.

It is an arithmetic number, because the mean of its divisors is an integer number (243931758).

Almost surely, 2^1428743031 is an apocalyptic number.

1428743031 is a deficient number, since it is larger than the sum of its proper divisors (522711033).

1428743031 is a wasteful number, since it uses less digits than its factorization.

1428743031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615841.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1428743031 is about 37798.7173195070. The cubic root of 1428743031 is about 1126.2929742414.

The spelling of 1428743031 in words is "one billion, four hundred twenty-eight million, seven hundred forty-three thousand, thirty-one".