431103213 has 6 divisors (see below), whose sum is σ = 622704654. Its totient is φ = 287402136.

The previous prime is 431103209. The next prime is 431103227. The reversal of 431103213 is 312301134.

It can be written as a sum of positive squares in only one way, i.e., 266930244 + 164172969 = 16338^2 + 12813^2 .

It is not a de Polignac number, because 431103213 - 2² = 431103209 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431103313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23950170 + ... + 23950187.

It is an arithmetic number, because the mean of its divisors is an integer number (103784109).

Almost surely, 2^431103213 is an apocalyptic number.

It is an amenable number.

431103213 is a deficient number, since it is larger than the sum of its proper divisors (191601441).

431103213 is a wasteful number, since it uses less digits than its factorization.

431103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47900363 (or 47900360 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 431103213 is about 20763.0251408604. The cubic root of 431103213 is about 755.4291745852.

Adding to 431103213 its reverse (312301134), we get a palindrome (743404347).

The spelling of 431103213 in words is "four hundred thirty-one million, one hundred three thousand, two hundred thirteen".