431243444 has 6 divisors (see below), whose sum is σ = 754676034. Its totient is φ = 215621720.

The previous prime is 431243443. The next prime is 431243459. The reversal of 431243444 is 444342134.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 405619600 + 25623844 = 20140^2 + 5062^2 .

It is a super-2 number, since 2×431243444² = 371941815985962272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431243443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53905427 + ... + 53905434.

It is an arithmetic number, because the mean of its divisors is an integer number (125779339).

Almost surely, 2^431243444 is an apocalyptic number.

It is an amenable number.

431243444 is a deficient number, since it is larger than the sum of its proper divisors (323432590).

431243444 is a wasteful number, since it uses less digits than its factorization.

431243444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107810865 (or 107810863 counting only the distinct ones).

The product of its digits is 18432, while the sum is 29.

The square root of 431243444 is about 20766.4018067647. The cubic root of 431243444 is about 755.5110753931.

Adding to 431243444 its reverse (444342134), we get a palindrome (875585578).

The spelling of 431243444 in words is "four hundred thirty-one million, two hundred forty-three thousand, four hundred forty-four".