210131226938 has 4 divisors (see below), whose sum is σ = 315196840410. Its totient is φ = 105065613468.

The previous prime is 210131226937. The next prime is 210131226941. The reversal of 210131226938 is 839622131012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 178508785009 + 31622441929 = 422503^2 + 177827^2 .

It is not an unprimeable number, because it can be changed into a prime (210131226937) 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 as a sum of consecutive naturals, namely, 52532806733 + ... + 52532806736.

Almost surely, 2^210131226938 is an apocalyptic number.

210131226938 is a deficient number, since it is larger than the sum of its proper divisors (105065613472).

210131226938 is a wasteful number, since it uses less digits than its factorization.

210131226938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105065613471.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 210131226938 in words is "two hundred ten billion, one hundred thirty-one million, two hundred twenty-six thousand, nine hundred thirty-eight".