201131002 has 4 divisors (see below), whose sum is σ = 301696506. Its totient is φ = 100565500.

The previous prime is 201130999. The next prime is 201131053. The reversal of 201131002 is 200131102.

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., 146385801 + 54745201 = 12099^2 + 7399^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201131002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50282749 + ... + 50282752.

Almost surely, 2^201131002 is an apocalyptic number.

201131002 is a deficient number, since it is larger than the sum of its proper divisors (100565504).

201131002 is a wasteful number, since it uses less digits than its factorization.

201131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100565503.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 201131002 is about 14182.0662105351. The cubic root of 201131002 is about 585.9038328370.

Adding to 201131002 its reverse (200131102), we get a palindrome (401262104).

It can be divided in two parts, 20113 and 1002, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 201131002 in words is "two hundred one million, one hundred thirty-one thousand, two".