131211033203 has 4 divisors (see below), whose sum is σ = 133434949080. Its totient is φ = 128987117328.

The previous prime is 131211033199. The next prime is 131211033229. The reversal of 131211033203 is 302330112131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302330112131 = 17 ⋅17784124243.

It is a cyclic number.

It is not a de Polignac number, because 131211033203 - 2² = 131211033199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131211033703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111957850 + ... + 1111957967.

It is an arithmetic number, because the mean of its divisors is an integer number (33358737270).

Almost surely, 2^131211033203 is an apocalyptic number.

131211033203 is a deficient number, since it is larger than the sum of its proper divisors (2223915877).

131211033203 is an equidigital number, since it uses as much as digits as its factorization.

131211033203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223915876.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131211033203 its reverse (302330112131), we get a palindrome (433541145334).

The spelling of 131211033203 in words is "one hundred thirty-one billion, two hundred eleven million, thirty-three thousand, two hundred three".