140231400 has 96 divisors (see below), whose sum is σ = 457634400. Its totient is φ = 35424000.

The previous prime is 140231387. The next prime is 140231407. The reversal of 140231400 is 4132041.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 140231400.

It is not an unprimeable number, because it can be changed into a prime (140231407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5250 + ... + 17550.

It is an arithmetic number, because the mean of its divisors is an integer number (4767025).

Almost surely, 2^140231400 is an apocalyptic number.

140231400 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 140231400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228817200).

140231400 is an abundant number, since it is smaller than the sum of its proper divisors (317403000).

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

140231400 is a wasteful number, since it uses less digits than its factorization.

140231400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12339 (or 12330 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 140231400 is about 11841.9339636733. The cubic root of 140231400 is about 519.5353344111.

Adding to 140231400 its reverse (4132041), we get a palindrome (144363441).

It can be divided in two parts, 140 and 231400, that added together give a triangular number (231540 = T₆₈₀).

The spelling of 140231400 in words is "one hundred forty million, two hundred thirty-one thousand, four hundred".