431243400 has 96 divisors (see below), whose sum is σ = 1527848640. Its totient is φ = 98568960.

The previous prime is 431243381. The next prime is 431243413. The reversal of 431243400 is 4342134.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47139 + ... + 55538.

It is an arithmetic number, because the mean of its divisors is an integer number (15915090).

Almost surely, 2^431243400 is an apocalyptic number.

431243400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431243400 is an abundant number, since it is smaller than the sum of its proper divisors (1096605240).

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

431243400 is a wasteful number, since it uses less digits than its factorization.

431243400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102703 (or 102694 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 431243400 is about 20766.4007473611. The cubic root of 431243400 is about 755.5110496981.

Adding to 431243400 its reverse (4342134), we get a palindrome (435585534).

The spelling of 431243400 in words is "four hundred thirty-one million, two hundred forty-three thousand, four hundred".