143315478 has 24 divisors (see below), whose sum is σ = 311763816. Its totient is φ = 47580000.

The previous prime is 143315453. The next prime is 143315503. The reversal of 143315478 is 874513341.

It is a happy number.

143315478 is a `hidden beast` number, since 1 + 433 + 154 + 78 = 666.

It is an interprime number because it is at equal distance from previous prime (143315453) and next prime (143315503).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11343 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (12990159).

Almost surely, 2^143315478 is an apocalyptic number.

143315478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

143315478 is an abundant number, since it is smaller than the sum of its proper divisors (168448338).

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

143315478 is a wasteful number, since it uses less digits than its factorization.

143315478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980 (or 31977 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 143315478 is about 11971.4442737708. Note that the first 3 decimals coincide. The cubic root of 143315478 is about 523.3164245509.

The spelling of 143315478 in words is "one hundred forty-three million, three hundred fifteen thousand, four hundred seventy-eight".