210113431 has 16 divisors (see below), whose sum is σ = 232560000. Its totient is φ = 188244000.

The previous prime is 210113429. The next prime is 210113461. The reversal of 210113431 is 134311012.

It is a cyclic number.

It is not a de Polignac number, because 210113431 - 2¹ = 210113429 is a prime.

It is a super-2 number, since 2×210113431² = 88295307773183522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210113411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420820 + ... + 421318.

It is an arithmetic number, because the mean of its divisors is an integer number (14535000).

Almost surely, 2^210113431 is an apocalyptic number.

210113431 is a deficient number, since it is larger than the sum of its proper divisors (22446569).

210113431 is a wasteful number, since it uses less digits than its factorization.

210113431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 210113431 is about 14495.2899591557. The cubic root of 210113431 is about 594.4991958563.

Adding to 210113431 its reverse (134311012), we get a palindrome (344424443).

It can be divided in two parts, 21011 and 3431, that added together give a palindrome (24442).

The spelling of 210113431 in words is "two hundred ten million, one hundred thirteen thousand, four hundred thirty-one".