431000445 has 16 divisors (see below), whose sum is σ = 690874560. Its totient is φ = 229442304.

The previous prime is 431000443. The next prime is 431000461. The reversal of 431000445 is 544000134.

It is not a de Polignac number, because 431000445 - 2¹ = 431000443 is a prime.

It is a super-2 number, since 2×431000445² = 371522767180396050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431000443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18060 + ... + 34469.

It is an arithmetic number, because the mean of its divisors is an integer number (43179660).

Almost surely, 2^431000445 is an apocalyptic number.

It is an amenable number.

431000445 is a deficient number, since it is larger than the sum of its proper divisors (259874115).

431000445 is a wasteful number, since it uses less digits than its factorization.

431000445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53084.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 431000445 is about 20760.5502094718. The cubic root of 431000445 is about 755.3691424685.

Adding to 431000445 its reverse (544000134), we get a palindrome (975000579).

The spelling of 431000445 in words is "four hundred thirty-one million, four hundred forty-five", and thus it is an aban number.