131211311123400 has 48 divisors (see below), whose sum is σ = 406755064484400. Its totient is φ = 34989682966080.

The previous prime is 131211311123383. The next prime is 131211311123413. The reversal of 131211311123400 is 4321113112131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109342758670 + ... + 109342759869.

It is an arithmetic number, because the mean of its divisors is an integer number (8474063843425).

Almost surely, 2^{131211311123400} is an apocalyptic number.

131211311123400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131211311123400 is an abundant number, since it is smaller than the sum of its proper divisors (275543753361000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131211311123400 is a wasteful number, since it uses less digits than its factorization.

131211311123400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218685518558 (or 218685518549 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 131211311123400 its reverse (4321113112131), we get a palindrome (135532424235531).

The spelling of 131211311123400 in words is "one hundred thirty-one trillion, two hundred eleven billion, three hundred eleven million, one hundred twenty-three thousand, four hundred".