143531972 has 12 divisors (see below), whose sum is σ = 251349420. Its totient is φ = 71717856.

The previous prime is 143531959. The next prime is 143532001. The reversal of 143531972 is 279135341.

It can be written as a sum of positive squares in 2 ways, for example, as 68293696 + 75238276 = 8264^2 + 8674^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4847 + ... + 17622.

It is an arithmetic number, because the mean of its divisors is an integer number (20945785).

Almost surely, 2^143531972 is an apocalyptic number.

It is an amenable number.

143531972 is a deficient number, since it is larger than the sum of its proper divisors (107817448).

143531972 is a wasteful number, since it uses less digits than its factorization.

143531972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24070 (or 24068 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 143531972 is about 11980.4829618843. The cubic root of 143531972 is about 523.5798012340.

The spelling of 143531972 in words is "one hundred forty-three million, five hundred thirty-one thousand, nine hundred seventy-two".