431003021240 has 96 divisors (see below), whose sum is σ = 1073601270000. Its totient is φ = 155600586240.

The previous prime is 431003021231. The next prime is 431003021287. The reversal of 431003021240 is 42120300134.

It is a super-2 number, since 2×431003021240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352436 + ... + 993084.

Almost surely, 2^431003021240 is an apocalyptic number.

431003021240 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 431003021240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536800635000).

431003021240 is an abundant number, since it is smaller than the sum of its proper divisors (642598248760).

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

431003021240 is a wasteful number, since it uses less digits than its factorization.

431003021240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640821 (or 640806 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 431003021240 its reverse (42120300134), we get a palindrome (473123321374).

The spelling of 431003021240 in words is "four hundred thirty-one billion, three million, twenty-one thousand, two hundred forty".