431044213 has 2 divisors, whose sum is σ = 431044214. Its totient is φ = 431044212.

The previous prime is 431044183. The next prime is 431044247. The reversal of 431044213 is 312440134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239692324 + 191351889 = 15482^2 + 13833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431044213 is a prime.

It is a super-2 number, since 2×431044213² = 371598227121578738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431044253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215522106 + 215522107.

It is an arithmetic number, because the mean of its divisors is an integer number (215522107).

Almost surely, 2^431044213 is an apocalyptic number.

It is an amenable number.

431044213 is a deficient number, since it is larger than the sum of its proper divisors (1).

431044213 is an equidigital number, since it uses as much as digits as its factorization.

431044213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 431044213 is about 20761.6042973562. The cubic root of 431044213 is about 755.3947107929.

Adding to 431044213 its reverse (312440134), we get a palindrome (743484347).

The spelling of 431044213 in words is "four hundred thirty-one million, forty-four thousand, two hundred thirteen".