431223513 has 16 divisors (see below), whose sum is σ = 695756160. Its totient is φ = 231918336.

The previous prime is 431223503. The next prime is 431223517. The reversal of 431223513 is 315322134.

It is not a de Polignac number, because 431223513 - 2²⁰ = 430174937 is a prime.

It is a super-2 number, since 2×431223513² = 371907436328122338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431223517) 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, 603598 + ... + 604311.

It is an arithmetic number, because the mean of its divisors is an integer number (43484760).

Almost surely, 2^431223513 is an apocalyptic number.

It is an amenable number.

431223513 is a deficient number, since it is larger than the sum of its proper divisors (264532647).

431223513 is a wasteful number, since it uses less digits than its factorization.

431223513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207936.

The product of its digits is 2160, while the sum is 24.

The square root of 431223513 is about 20765.9219154845. The cubic root of 431223513 is about 755.4994359325.

Adding to 431223513 its reverse (315322134), we get a palindrome (746545647).

The spelling of 431223513 in words is "four hundred thirty-one million, two hundred twenty-three thousand, five hundred thirteen".