131211222403311 has 48 divisors (see below), whose sum is σ = 200400112972800. Its totient is φ = 82609377125184.

The previous prime is 131211222403307. The next prime is 131211222403361. The reversal of 131211222403311 is 113304222112131.

131211222403311 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 1 + 1 + 222 + 403 + 31 + 1 = 666.

It is not a de Polignac number, because 131211222403311 - 2² = 131211222403307 is a prime.

It is a super-2 number, since 2×131211222403311² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211222403301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27530251 + ... + 31942716.

It is an arithmetic number, because the mean of its divisors is an integer number (4175002353600).

Almost surely, 2^{131211222403311} is an apocalyptic number.

131211222403311 is a deficient number, since it is larger than the sum of its proper divisors (69188890569489).

131211222403311 is a wasteful number, since it uses less digits than its factorization.

131211222403311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59473188 (or 59473185 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 131211222403311 its reverse (113304222112131), we get a palindrome (244515444515442).

The spelling of 131211222403311 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred twenty-two million, four hundred three thousand, three hundred eleven".