131145400000 has 84 divisors (see below), whose sum is σ = 325281743136. Its totient is φ = 52458080000.

The previous prime is 131145399991. The next prime is 131145400003. The reversal of 131145400000 is 4541131.

It is not an unprimeable number, because it can be changed into a prime (131145400003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127864 + ... + 527863.

It is an arithmetic number, because the mean of its divisors is an integer number (3872401704).

Almost surely, 2^131145400000 is an apocalyptic number.

131145400000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131145400000 is an abundant number, since it is smaller than the sum of its proper divisors (194136343136).

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

131145400000 is an frugal number, since it uses more digits than its factorization.

131145400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655764 (or 655734 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 131145400000 its reverse (4541131), we get a palindrome (131149941131).

The spelling of 131145400000 in words is "one hundred thirty-one billion, one hundred forty-five million, four hundred thousand".