131211002 has 8 divisors (see below), whose sum is σ = 211956276. Its totient is φ = 60558912.

The previous prime is 131210999. The next prime is 131211007. The reversal of 131211002 is 200112131.

It can be written as a sum of positive squares in 2 ways, for example, as 104264521 + 26946481 = 10211^2 + 5191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131211007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2523263 + ... + 2523314.

Almost surely, 2^131211002 is an apocalyptic number.

131211002 is a deficient number, since it is larger than the sum of its proper divisors (80745274).

131211002 is a wasteful number, since it uses less digits than its factorization.

131211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046592.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 131211002 is about 11454.7370986854. The cubic root of 131211002 is about 508.1478401832.

Adding to 131211002 its reverse (200112131), we get a palindrome (331323133).

The spelling of 131211002 in words is "one hundred thirty-one million, two hundred eleven thousand, two".