1280431445530 has 16 divisors (see below), whose sum is σ = 2309200366824. Its totient is φ = 511189519360.

The previous prime is 1280431445459. The next prime is 1280431445551. The reversal of 1280431445530 is 355441340821.

It can be written as a sum of positive squares in 4 ways, for example, as 671159093049 + 609272352481 = 819243^2 + 780559^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122876887 + ... + 122887306.

Almost surely, 2^{1280431445530} is an apocalyptic number.

1280431445530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1280431445530 is a deficient number, since it is larger than the sum of its proper divisors (1028768921294).

1280431445530 is a wasteful number, since it uses less digits than its factorization.

1280431445530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245764721.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 1280431445530 in words is "one trillion, two hundred eighty billion, four hundred thirty-one million, four hundred forty-five thousand, five hundred thirty".