431402244 has 72 divisors (see below), whose sum is σ = 1245746880. Its totient is φ = 113772672.

The previous prime is 431402221. The next prime is 431402263. The reversal of 431402244 is 442204134.

It is a happy number.

It is a super-2 number, since 2×431402244² = 372215792256471072, which contains 22 as substring.

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, 999 + ... + 29390.

It is an arithmetic number, because the mean of its divisors is an integer number (17302040).

Almost surely, 2^431402244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431402244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622873440).

431402244 is an abundant number, since it is smaller than the sum of its proper divisors (814344636).

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

431402244 is a wasteful number, since it uses less digits than its factorization.

431402244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30429 (or 30414 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 431402244 is about 20770.2249385990. The cubic root of 431402244 is about 755.6037998446.

Adding to 431402244 its reverse (442204134), we get a palindrome (873606378).

The spelling of 431402244 in words is "four hundred thirty-one million, four hundred two thousand, two hundred forty-four".