315432002 has 4 divisors (see below), whose sum is σ = 473148006. Its totient is φ = 157716000.

The previous prime is 315432001. The next prime is 315432017. The reversal of 315432002 is 200234513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200234513 = 61 ⋅3282533.

It can be written as a sum of positive squares in only one way, i.e., 312900721 + 2531281 = 17689^2 + 1591^2 .

It is not an unprimeable number, because it can be changed into a prime (315432001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78857999 + ... + 78858002.

Almost surely, 2^315432002 is an apocalyptic number.

315432002 is a deficient number, since it is larger than the sum of its proper divisors (157716004).

315432002 is a wasteful number, since it uses less digits than its factorization.

315432002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157716003.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 315432002 is about 17760.4054570835. The cubic root of 315432002 is about 680.7201151617.

Adding to 315432002 its reverse (200234513), we get a palindrome (515666515).

The spelling of 315432002 in words is "three hundred fifteen million, four hundred thirty-two thousand, two".