131211434020312 has 64 divisors (see below), whose sum is σ = 249997449461760. Its totient is φ = 64553551344000.

The previous prime is 131211434020291. The next prime is 131211434020339. The reversal of 131211434020312 is 213020434112131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3883012137 + ... + 3883045927.

It is an arithmetic number, because the mean of its divisors is an integer number (3906210147840).

Almost surely, 2^{131211434020312} is an apocalyptic number.

It is an amenable number.

131211434020312 is a deficient number, since it is larger than the sum of its proper divisors (118786015441448).

131211434020312 is a wasteful number, since it uses less digits than its factorization.

131211434020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63544 (or 63540 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 131211434020312 its reverse (213020434112131), we get a palindrome (344231868132443).

The spelling of 131211434020312 in words is "one hundred thirty-one trillion, two hundred eleven billion, four hundred thirty-four million, twenty thousand, three hundred twelve".