431542940 has 48 divisors (see below), whose sum is σ = 939181824. Its totient is φ = 166387200.

The previous prime is 431542927. The next prime is 431542963. The reversal of 431542940 is 49245134.

It is a junction number, because it is equal to n+sod(n) for n = 431542897 and 431542906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172982 + ... + 175458.

It is an arithmetic number, because the mean of its divisors is an integer number (19566288).

Almost surely, 2^431542940 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 431542940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469590912).

431542940 is an abundant number, since it is smaller than the sum of its proper divisors (507638884).

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

431542940 is a wasteful number, since it uses less digits than its factorization.

431542940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798 (or 2796 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 431542940 is about 20773.6116262917. The cubic root of 431542940 is about 755.6859342319.

The spelling of 431542940 in words is "four hundred thirty-one million, five hundred forty-two thousand, nine hundred forty".