131938770 has 16 divisors (see below), whose sum is σ = 316653120. Its totient is φ = 35183664.

The previous prime is 131938757. The next prime is 131938771. The reversal of 131938770 is 77839131.

It is a happy number.

It is a super-2 number, since 2×131938770² = 34815678058225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131938771) 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, 2198950 + ... + 2199009.

It is an arithmetic number, because the mean of its divisors is an integer number (19790820).

Almost surely, 2^131938770 is an apocalyptic number.

131938770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131938770 is an abundant number, since it is smaller than the sum of its proper divisors (184714350).

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

131938770 is a wasteful number, since it uses less digits than its factorization.

131938770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397969.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 131938770 is about 11486.4602902722. The cubic root of 131938770 is about 509.0855971829.

The spelling of 131938770 in words is "one hundred thirty-one million, nine hundred thirty-eight thousand, seven hundred seventy".