131333906 has 16 divisors (see below), whose sum is σ = 220153248. Its totient is φ = 58240800.

The previous prime is 131333903. The next prime is 131333957. The reversal of 131333906 is 609333131.

It is not an unprimeable number, because it can be changed into a prime (131333903) 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, 71900 + ... + 73703.

It is an arithmetic number, because the mean of its divisors is an integer number (13759578).

Almost surely, 2^131333906 is an apocalyptic number.

131333906 is a deficient number, since it is larger than the sum of its proper divisors (88819342).

131333906 is a wasteful number, since it uses less digits than its factorization.

131333906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145657.

The product of its (nonzero) digits is 4374, while the sum is 29.

The square root of 131333906 is about 11460.1006103786. The cubic root of 131333906 is about 508.3064496279.

The spelling of 131333906 in words is "one hundred thirty-one million, three hundred thirty-three thousand, nine hundred six".