131855340 has 24 divisors (see below), whose sum is σ = 369195120. Its totient is φ = 35161408.

The previous prime is 131855327. The next prime is 131855371. The reversal of 131855340 is 43558131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 131855298 and 131855307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098735 + ... + 1098854.

It is an arithmetic number, because the mean of its divisors is an integer number (15383130).

Almost surely, 2^131855340 is an apocalyptic number.

131855340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131855340 is an abundant number, since it is smaller than the sum of its proper divisors (237339780).

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

131855340 is a wasteful number, since it uses less digits than its factorization.

131855340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197601 (or 2197599 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 131855340 is about 11482.8280488737. The cubic root of 131855340 is about 508.9782697032.

The spelling of 131855340 in words is "one hundred thirty-one million, eight hundred fifty-five thousand, three hundred forty".