1431236306642 has 4 divisors (see below), whose sum is σ = 2146854459966. Its totient is φ = 715618153320.

The previous prime is 1431236306623. The next prime is 1431236306671. The reversal of 1431236306642 is 2466036321341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1320474476161 + 110761830481 = 1149119^2 + 332809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1431236306642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357809076659 + ... + 357809076662.

Almost surely, 2^{1431236306642} is an apocalyptic number.

1431236306642 is a deficient number, since it is larger than the sum of its proper divisors (715618153324).

1431236306642 is an equidigital number, since it uses as much as digits as its factorization.

1431236306642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715618153323.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 1431236306642 in words is "one trillion, four hundred thirty-one billion, two hundred thirty-six million, three hundred six thousand, six hundred forty-two".