202131320002 has 4 divisors (see below), whose sum is σ = 303196980006. Its totient is φ = 101065660000.

The previous prime is 202131319997. The next prime is 202131320029. The reversal of 202131320002 is 200023131202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200023131202 = 2 ⋅100011565601.

It can be written as a sum of positive squares in only one way, i.e., 191011828401 + 11119491601 = 437049^2 + 105449^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50532829999 + ... + 50532830002.

Almost surely, 2^202131320002 is an apocalyptic number.

202131320002 is a deficient number, since it is larger than the sum of its proper divisors (101065660004).

202131320002 is a wasteful number, since it uses less digits than its factorization.

202131320002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101065660003.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 202131320002 its reverse (200023131202), we get a palindrome (402154451204).

The spelling of 202131320002 in words is "two hundred two billion, one hundred thirty-one million, three hundred twenty thousand, two".