131021433213400 has 144 divisors (see below), whose sum is σ = 327694193863200. Its totient is φ = 48701338183680.

The previous prime is 131021433213371. The next prime is 131021433213427. The reversal of 131021433213400 is 4312334120131.

It is a super-2 number, since 2×131021433213400² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9780679 + ... + 18913078.

It is an arithmetic number, because the mean of its divisors is an integer number (2275654124050).

Almost surely, 2^{131021433213400} is an apocalyptic number.

131021433213400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131021433213400 is an abundant number, since it is smaller than the sum of its proper divisors (196672760649800).

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

131021433213400 is a wasteful number, since it uses less digits than its factorization.

131021433213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28693886 (or 28693860 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 131021433213400 its reverse (4312334120131), we get a palindrome (135333767333531).

The spelling of 131021433213400 in words is "one hundred thirty-one trillion, twenty-one billion, four hundred thirty-three million, two hundred thirteen thousand, four hundred".