431031445 has 16 divisors (see below), whose sum is σ = 557473392. Its totient is φ = 318044160.

The previous prime is 431031439. The next prime is 431031449. The reversal of 431031445 is 544130134.

It can be written as a sum of positive squares in 8 ways, for example, as 34503876 + 396527569 = 5874^2 + 19913^2 .

It is not a de Polignac number, because 431031445 - 2²³ = 422642837 is a prime.

It is a super-3 number, since 3×431031445³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431031449) 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, 126565 + ... + 129925.

It is an arithmetic number, because the mean of its divisors is an integer number (34842087).

Almost surely, 2^431031445 is an apocalyptic number.

It is an amenable number.

431031445 is a deficient number, since it is larger than the sum of its proper divisors (126441947).

431031445 is a wasteful number, since it uses less digits than its factorization.

431031445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 431031445 is about 20761.2968043906. The cubic root of 431031445 is about 755.3872521807.

Adding to 431031445 its reverse (544130134), we get a palindrome (975161579).

The spelling of 431031445 in words is "four hundred thirty-one million, thirty-one thousand, four hundred forty-five".