1431055645 has 8 divisors (see below), whose sum is σ = 1718576640. Its totient is φ = 1143971280.

The previous prime is 1431055621. The next prime is 1431055649. The reversal of 1431055645 is 5465501341.

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

It is a de Polignac number, because none of the positive numbers 2^k-1431055645 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1431055645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431055649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101901 + ... + 115090.

It is an arithmetic number, because the mean of its divisors is an integer number (214822080).

Almost surely, 2^1431055645 is an apocalyptic number.

It is an amenable number.

1431055645 is a deficient number, since it is larger than the sum of its proper divisors (287520995).

1431055645 is a wasteful number, since it uses less digits than its factorization.

1431055645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218315.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1431055645 is about 37829.2961208638. The cubic root of 1431055645 is about 1126.9003325425.

Adding to 1431055645 its reverse (5465501341), we get a palindrome (6896556986).

The spelling of 1431055645 in words is "one billion, four hundred thirty-one million, fifty-five thousand, six hundred forty-five".