201131402 has 4 divisors (see below), whose sum is σ = 301697106. Its totient is φ = 100565700.

The previous prime is 201131401. The next prime is 201131417. The reversal of 201131402 is 204131102.

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., 186622921 + 14508481 = 13661^2 + 3809^2 .

It is not an unprimeable number, because it can be changed into a prime (201131401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50282849 + ... + 50282852.

Almost surely, 2^201131402 is an apocalyptic number.

201131402 is a deficient number, since it is larger than the sum of its proper divisors (100565704).

201131402 is a wasteful number, since it uses less digits than its factorization.

201131402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100565703.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201131402 is about 14182.0803128455. The cubic root of 201131402 is about 585.9042212429.

Adding to 201131402 its reverse (204131102), we get a palindrome (405262504).

The spelling of 201131402 in words is "two hundred one million, one hundred thirty-one thousand, four hundred two".