431354156545 has 16 divisors (see below), whose sum is σ = 559876559760. Its totient is φ = 317147445504.

The previous prime is 431354156531. The next prime is 431354156549. The reversal of 431354156545 is 545651453134.

It can be written as a sum of positive squares in 8 ways, for example, as 2832049089 + 428522107456 = 53217^2 + 654616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431354156545 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431354156495 and 431354156504.

It is not an unprimeable number, because it can be changed into a prime (431354156549) 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 15 ways as a sum of consecutive naturals, for example, 14474674 + ... + 14504443.

It is an arithmetic number, because the mean of its divisors is an integer number (34992284985).

Almost surely, 2^431354156545 is an apocalyptic number.

It is an amenable number.

431354156545 is a deficient number, since it is larger than the sum of its proper divisors (128522403215).

431354156545 is a wasteful number, since it uses less digits than its factorization.

431354156545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28979364.

The product of its digits is 2160000, while the sum is 46.

The spelling of 431354156545 in words is "four hundred thirty-one billion, three hundred fifty-four million, one hundred fifty-six thousand, five hundred forty-five".