143194431 has 16 divisors (see below), whose sum is σ = 207907200. Its totient is φ = 87319008.

The previous prime is 143194423. The next prime is 143194463. The reversal of 143194431 is 134491341.

It is not a de Polignac number, because 143194431 - 2³ = 143194423 is a prime.

It is a super-2 number, since 2×143194431² = 41009290138827522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143192431) 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, 41661 + ... + 44966.

It is an arithmetic number, because the mean of its divisors is an integer number (12994200).

Almost surely, 2^143194431 is an apocalyptic number.

143194431 is a deficient number, since it is larger than the sum of its proper divisors (64712769).

143194431 is a wasteful number, since it uses less digits than its factorization.

143194431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86678.

The product of its digits is 5184, while the sum is 30.

The square root of 143194431 is about 11966.3875501339. The cubic root of 143194431 is about 523.1690486897.

The spelling of 143194431 in words is "one hundred forty-three million, one hundred ninety-four thousand, four hundred thirty-one".