213431243002 has 4 divisors (see below), whose sum is σ = 320146864506. Its totient is φ = 106715621500.

The previous prime is 213431242979. The next prime is 213431243009. The reversal of 213431243002 is 200342134312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 138399624441 + 75031618561 = 372021^2 + 273919^2 .

It is a super-3 number, since 3×213431243002³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (213431243009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53357810749 + ... + 53357810752.

Almost surely, 2^213431243002 is an apocalyptic number.

213431243002 is a deficient number, since it is larger than the sum of its proper divisors (106715621504).

213431243002 is a wasteful number, since it uses less digits than its factorization.

213431243002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106715621503.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 213431243002 its reverse (200342134312), we get a palindrome (413773377314).

The spelling of 213431243002 in words is "two hundred thirteen billion, four hundred thirty-one million, two hundred forty-three thousand, two".