431423134 has 4 divisors (see below), whose sum is σ = 647134704. Its totient is φ = 215711566.

The previous prime is 431423131. The next prime is 431423141. The reversal of 431423134 is 431324134.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×431423134² = 372251841100763912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431423099 and 431423108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431423131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107855782 + ... + 107855785.

It is an arithmetic number, because the mean of its divisors is an integer number (161783676).

Almost surely, 2^431423134 is an apocalyptic number.

431423134 is a deficient number, since it is larger than the sum of its proper divisors (215711570).

431423134 is a wasteful number, since it uses less digits than its factorization.

431423134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215711569.

The product of its digits is 3456, while the sum is 25.

The square root of 431423134 is about 20770.7278158470. The cubic root of 431423134 is about 755.6159959707.

Adding to 431423134 its reverse (431324134), we get a palindrome (862747268).

The spelling of 431423134 in words is "four hundred thirty-one million, four hundred twenty-three thousand, one hundred thirty-four".