131010121231440 has 120 divisors (see below), whose sum is σ = 446408867733024. Its totient is φ = 31760029382400.

The previous prime is 131010121231433. The next prime is 131010121231459. The reversal of 131010121231440 is 44132121010131.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a self number, because there is not a number n which added to its sum of digits gives 131010121231440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2255654866 + ... + 2255712945.

Almost surely, 2^{131010121231440} is an apocalyptic number.

131010121231440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131010121231440 is an abundant number, since it is smaller than the sum of its proper divisors (315398746501584).

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

131010121231440 is a wasteful number, since it uses less digits than its factorization.

131010121231440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511367849 (or 4511367832 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 131010121231440 its reverse (44132121010131), we get a palindrome (175142242241571).

The spelling of 131010121231440 in words is "one hundred thirty-one trillion, ten billion, one hundred twenty-one million, two hundred thirty-one thousand, four hundred forty".