143531340 has 48 divisors (see below), whose sum is σ = 425531232. Its totient is φ = 36023296.

The previous prime is 143531321. The next prime is 143531341. The reversal of 143531340 is 43135341.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 143531340.

It is not an unprimeable number, because it can be changed into a prime (143531341) 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, 69339 + ... + 71378.

It is an arithmetic number, because the mean of its divisors is an integer number (8865234).

Almost surely, 2^143531340 is an apocalyptic number.

143531340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143531340 is an abundant number, since it is smaller than the sum of its proper divisors (281999892).

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

143531340 is a wasteful number, since it uses less digits than its factorization.

143531340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140746 (or 140744 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 143531340 is about 11980.4565856231. The cubic root of 143531340 is about 523.5790327573.

Adding to 143531340 its reverse (43135341), we get a palindrome (186666681).

The spelling of 143531340 in words is "one hundred forty-three million, five hundred thirty-one thousand, three hundred forty".