143931474 has 12 divisors (see below), whose sum is σ = 311851566. Its totient is φ = 47977152.

The previous prime is 143931461. The next prime is 143931497. The reversal of 143931474 is 474139341.

It can be written as a sum of positive squares in only one way, i.e., 116964225 + 26967249 = 10815^2 + 5193^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3998079 + ... + 3998114.

Almost surely, 2^143931474 is an apocalyptic number.

143931474 is an abundant number, since it is smaller than the sum of its proper divisors (167920092).

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

143931474 is a wasteful number, since it uses less digits than its factorization.

143931474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996201 (or 7996198 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 143931474 is about 11997.1444102336. The cubic root of 143931474 is about 524.0651226290.

The spelling of 143931474 in words is "one hundred forty-three million, nine hundred thirty-one thousand, four hundred seventy-four".