431340202140 has 96 divisors (see below), whose sum is σ = 1230777192960. Its totient is φ = 112832069376.

The previous prime is 431340202121. The next prime is 431340202147. The reversal of 431340202140 is 41202043134.

It is a self number, because there is not a number n which added to its sum of digits gives 431340202140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431340202147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22756147 + ... + 22775093.

It is an arithmetic number, because the mean of its divisors is an integer number (12820595760).

Almost surely, 2^431340202140 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 431340202140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615388596480).

431340202140 is an abundant number, since it is smaller than the sum of its proper divisors (799436990820).

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

431340202140 is a wasteful number, since it uses less digits than its factorization.

431340202140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26171 (or 26169 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 431340202140 its reverse (41202043134), we get a palindrome (472542245274).

The spelling of 431340202140 in words is "four hundred thirty-one billion, three hundred forty million, two hundred two thousand, one hundred forty".