1406323531561 has 8 divisors (see below), whose sum is σ = 1514545905600. Its totient is φ = 1298107391952.

The previous prime is 1406323531519. The next prime is 1406323531661. The reversal of 1406323531561 is 1651353236041.

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

It is a cyclic number.

It is not a de Polignac number, because 1406323531561 - 2¹³ = 1406323523369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1406323531661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084765 + ... + 1997338.

It is an arithmetic number, because the mean of its divisors is an integer number (189318238200).

Almost surely, 2^{1406323531561} is an apocalyptic number.

It is an amenable number.

1406323531561 is a deficient number, since it is larger than the sum of its proper divisors (108222374039).

1406323531561 is a wasteful number, since it uses less digits than its factorization.

1406323531561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117215.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 1406323531561 in words is "one trillion, four hundred six billion, three hundred twenty-three million, five hundred thirty-one thousand, five hundred sixty-one".