140231320 has 64 divisors (see below), whose sum is σ = 322560000. Its totient is φ = 54857088.

The previous prime is 140231297. The next prime is 140231323. The reversal of 140231320 is 23132041.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 140231294 and 140231303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140231323) 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, 628729 + ... + 628951.

It is an arithmetic number, because the mean of its divisors is an integer number (5040000).

Almost surely, 2^140231320 is an apocalyptic number.

140231320 is a gapful number since it is divisible by the number (10) 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 140231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161280000).

140231320 is an abundant number, since it is smaller than the sum of its proper divisors (182328680).

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

140231320 is a wasteful number, since it uses less digits than its factorization.

140231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 140231320 is about 11841.9305858462. The cubic root of 140231320 is about 519.5352356153.

Adding to 140231320 its reverse (23132041), we get a palindrome (163363361).

The spelling of 140231320 in words is "one hundred forty million, two hundred thirty-one thousand, three hundred twenty".