402313143 has 24 divisors (see below), whose sum is σ = 589513680. Its totient is φ = 243712000.

The previous prime is 402313139. The next prime is 402313189. The reversal of 402313143 is 341313204.

It is not a de Polignac number, because 402313143 - 2² = 402313139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402313103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17143 + ... + 33143.

It is an arithmetic number, because the mean of its divisors is an integer number (24563070).

Almost surely, 2^402313143 is an apocalyptic number.

402313143 is a deficient number, since it is larger than the sum of its proper divisors (187200537).

402313143 is a wasteful number, since it uses less digits than its factorization.

402313143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16067 (or 16050 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 402313143 is about 20057.7452122615. The cubic root of 402313143 is about 738.2238526727.

Adding to 402313143 its reverse (341313204), we get a palindrome (743626347).

The spelling of 402313143 in words is "four hundred two million, three hundred thirteen thousand, one hundred forty-three".