131906245 has 8 divisors (see below), whose sum is σ = 158446080. Its totient is φ = 105419280.

The previous prime is 131906237. The next prime is 131906249. The reversal of 131906245 is 542609131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131906245 - 2³ = 131906237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131906249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7501 + ... + 17890.

It is an arithmetic number, because the mean of its divisors is an integer number (19805760).

Almost surely, 2^131906245 is an apocalyptic number.

It is an amenable number.

131906245 is a deficient number, since it is larger than the sum of its proper divisors (26539835).

131906245 is a wasteful number, since it uses less digits than its factorization.

131906245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26435.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 131906245 is about 11485.0444056608. The cubic root of 131906245 is about 509.0437611862.

The spelling of 131906245 in words is "one hundred thirty-one million, nine hundred six thousand, two hundred forty-five".