143691044 has 12 divisors (see below), whose sum is σ = 287382144. Its totient is φ = 61581864.

The previous prime is 143691001. The next prime is 143691061. The reversal of 143691044 is 440196341.

It is a happy number.

143691044 is an admirable number.

It is a super-2 number, since 2×143691044² = 41294232251619872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 143691044.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2565884 + ... + 2565939.

It is an arithmetic number, because the mean of its divisors is an integer number (23948512).

Almost surely, 2^143691044 is an apocalyptic number.

143691044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

143691044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

143691044 is a wasteful number, since it uses less digits than its factorization.

143691044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131834 (or 5131832 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 143691044 is about 11987.1199209819. The cubic root of 143691044 is about 523.7731522015.

The spelling of 143691044 in words is "one hundred forty-three million, six hundred ninety-one thousand, forty-four".