131970308 has 12 divisors (see below), whose sum is σ = 236581212. Its totient is φ = 64375680.

The previous prime is 131970301. The next prime is 131970331. The reversal of 131970308 is 803079131.

It can be written as a sum of positive squares in 2 ways, for example, as 65254084 + 66716224 = 8078^2 + 8168^2 .

It is a super-2 number, since 2×131970308² = 34832324387229728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131970301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402185 + ... + 402512.

It is an arithmetic number, because the mean of its divisors is an integer number (19715101).

Almost surely, 2^131970308 is an apocalyptic number.

It is an amenable number.

131970308 is a deficient number, since it is larger than the sum of its proper divisors (104610904).

131970308 is a wasteful number, since it uses less digits than its factorization.

131970308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804742 (or 804740 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 131970308 is about 11487.8330419623. The cubic root of 131970308 is about 509.1261570640.

The spelling of 131970308 in words is "one hundred thirty-one million, nine hundred seventy thousand, three hundred eight".