131105400 has 48 divisors (see below), whose sum is σ = 406428600. Its totient is φ = 34961280.

The previous prime is 131105369. The next prime is 131105423. The reversal of 131105400 is 4501131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131105400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108655 + ... + 109854.

Almost surely, 2^131105400 is an apocalyptic number.

131105400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131105400 is an abundant number, since it is smaller than the sum of its proper divisors (275323200).

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

131105400 is a wasteful number, since it uses less digits than its factorization.

131105400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218528 (or 218519 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 131105400 is about 11450.1266368543. The cubic root of 131105400 is about 508.0114800969.

Adding to 131105400 its reverse (4501131), we get a palindrome (135606531).

The spelling of 131105400 in words is "one hundred thirty-one million, one hundred five thousand, four hundred".