131933090 has 16 divisors (see below), whose sum is σ = 251449272. Its totient is φ = 49668864.

The previous prime is 131933077. The next prime is 131933099. The reversal of 131933090 is 90339131.

It can be written as a sum of positive squares in 4 ways, for example, as 98743969 + 33189121 = 9937^2 + 5761^2 .

It is not an unprimeable number, because it can be changed into a prime (131933099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387869 + ... + 388208.

Almost surely, 2^131933090 is an apocalyptic number.

131933090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131933090 is a deficient number, since it is larger than the sum of its proper divisors (119516182).

131933090 is a wasteful number, since it uses less digits than its factorization.

131933090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776101.

The product of its (nonzero) digits is 2187, while the sum is 29.

The square root of 131933090 is about 11486.2130399884. The cubic root of 131933090 is about 509.0782916535.

The spelling of 131933090 in words is "one hundred thirty-one million, nine hundred thirty-three thousand, ninety".