131111312310 has 128 divisors (see below), whose sum is σ = 382036262400. Its totient is φ = 31732767360.

The previous prime is 131111312303. The next prime is 131111312333. The reversal of 131111312310 is 13213111131.

131111312310 is a `hidden beast` number, since 1 + 31 + 1 + 11 + 312 + 310 = 666.

It is a super-2 number, since 2×131111312310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1802772 + ... + 1874088.

It is an arithmetic number, because the mean of its divisors is an integer number (2984658300).

Almost surely, 2^131111312310 is an apocalyptic number.

131111312310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131111312310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191018131200).

131111312310 is an abundant number, since it is smaller than the sum of its proper divisors (250924950090).

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

131111312310 is a wasteful number, since it uses less digits than its factorization.

131111312310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71963 (or 71957 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 131111312310 its reverse (13213111131), we get a palindrome (144324423441).

The spelling of 131111312310 in words is "one hundred thirty-one billion, one hundred eleven million, three hundred twelve thousand, three hundred ten".