210001131 has 12 divisors (see below), whose sum is σ = 303469608. Its totient is φ = 139938624.

The previous prime is 210001117. The next prime is 210001133. The reversal of 210001131 is 131100012.

210001131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210001131 - 2⁷ = 210001003 is a prime.

It is a super-2 number, since 2×210001131² = 88200950042558322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (210001133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26296 + ... + 33338.

It is an arithmetic number, because the mean of its divisors is an integer number (25289134).

Almost surely, 2^210001131 is an apocalyptic number.

210001131 is a deficient number, since it is larger than the sum of its proper divisors (93468477).

210001131 is a wasteful number, since it uses less digits than its factorization.

210001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362 (or 10359 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 210001131 is about 14491.4157693443. The cubic root of 210001131 is about 594.3932623499.

Adding to 210001131 its reverse (131100012), we get a palindrome (341101143).

The spelling of 210001131 in words is "two hundred ten million, one thousand, one hundred thirty-one".