131103534400 has 42 divisors (see below), whose sum is σ = 322596638270. Its totient is φ = 52441413120.

The previous prime is 131103534343. The next prime is 131103534427. The reversal of 131103534400 is 4435301131.

It can be written as a sum of positive squares in 3 ways, for example, as 29796283456 + 101307250944 = 172616^2 + 318288^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40968255 + ... + 40971454.

Almost surely, 2^131103534400 is an apocalyptic number.

131103534400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131103534400 is an abundant number, since it is smaller than the sum of its proper divisors (191493103870).

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

131103534400 is an equidigital number, since it uses as much as digits as its factorization.

131103534400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81939731 (or 81939716 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 131103534400 its reverse (4435301131), we get a palindrome (135538835531).

The spelling of 131103534400 in words is "one hundred thirty-one billion, one hundred three million, five hundred thirty-four thousand, four hundred".