431000000 has 98 divisors (see below), whose sum is σ = 1071548784. Its totient is φ = 172000000.

The previous prime is 430999991. The next prime is 431000021. The reversal of 431000000 is 134.

It is a super-2 number, since 2×431000000² = 371522000000000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 999785 + ... + 1000215.

Almost surely, 2^431000000 is an apocalyptic number.

431000000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535774392).

431000000 is an abundant number, since it is smaller than the sum of its proper divisors (640548784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431000000 is an frugal number, since it uses more digits than its factorization.

431000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 431000000 is about 20760.5394920267. The cubic root of 431000000 is about 755.3688825002.

Adding to 431000000 its reverse (134), we get a palindrome (431000134).

The spelling of 431000000 in words is "four hundred thirty-one million", and thus it is an aban number.