131603290 has 128 divisors (see below), whose sum is σ = 317011968. Its totient is φ = 38154240.

The previous prime is 131603287. The next prime is 131603299. The reversal of 131603290 is 92306131.

131603290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131603299) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 727000 + ... + 727180.

It is an arithmetic number, because the mean of its divisors is an integer number (2476656).

Almost surely, 2^131603290 is an apocalyptic number.

131603290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131603290 is an abundant number, since it is smaller than the sum of its proper divisors (185408678).

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

131603290 is a wasteful number, since it uses less digits than its factorization.

131603290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 131603290 is about 11471.8477151678. The cubic root of 131603290 is about 508.6537478867.

It can be divided in two parts, 13160 and 3290, that multiplied together give a square (43296400 = 6580²).

The spelling of 131603290 in words is "one hundred thirty-one million, six hundred three thousand, two hundred ninety".