431220912 has 80 divisors (see below), whose sum is σ = 1217636352. Its totient is φ = 130913280.

The previous prime is 431220871. The next prime is 431220919. The reversal of 431220912 is 219022134.

It is a super-2 number, since 2×431220912² = 371902949892223488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (431220919) 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, 16773 + ... + 33819.

Almost surely, 2^431220912 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 431220912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608818176).

431220912 is an abundant number, since it is smaller than the sum of its proper divisors (786415440).

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

431220912 is a wasteful number, since it uses less digits than its factorization.

431220912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17106 (or 17100 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 431220912 is about 20765.8592887460. The cubic root of 431220912 is about 755.4979169538.

The spelling of 431220912 in words is "four hundred thirty-one million, two hundred twenty thousand, nine hundred twelve".