210745131 has 16 divisors (see below), whose sum is σ = 296217600. Its totient is φ = 132906528.

The previous prime is 210745123. The next prime is 210745187. The reversal of 210745131 is 131547012.

It is not a de Polignac number, because 210745131 - 2³ = 210745123 is a prime.

It is a super-2 number, since 2×210745131² = 88827020480414322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210745121) 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 15 ways as a sum of consecutive naturals, for example, 43110 + ... + 47748.

It is an arithmetic number, because the mean of its divisors is an integer number (18513600).

Almost surely, 2^210745131 is an apocalyptic number.

210745131 is a deficient number, since it is larger than the sum of its proper divisors (85472469).

210745131 is a wasteful number, since it uses less digits than its factorization.

210745131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5458.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 210745131 is about 14517.0634427215. The cubic root of 210745131 is about 595.0943813748.

The spelling of 210745131 in words is "two hundred ten million, seven hundred forty-five thousand, one hundred thirty-one".