131233402212 has 72 divisors (see below), whose sum is σ = 337361867136. Its totient is φ = 39675240000.

The previous prime is 131233402151. The next prime is 131233402213. The reversal of 131233402212 is 212204332131.

It is a super-2 number, since 2×131233402212² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131233402213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520962 + ... + 730662.

It is an arithmetic number, because the mean of its divisors is an integer number (4685581488).

Almost surely, 2^131233402212 is an apocalyptic number.

131233402212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131233402212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168680933568).

131233402212 is an abundant number, since it is smaller than the sum of its proper divisors (206128464924).

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

131233402212 is a wasteful number, since it uses less digits than its factorization.

131233402212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210161 (or 210148 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 131233402212 its reverse (212204332131), we get a palindrome (343437734343).

The spelling of 131233402212 in words is "one hundred thirty-one billion, two hundred thirty-three million, four hundred two thousand, two hundred twelve".