201012331 has 4 divisors (see below), whose sum is σ = 216474832. Its totient is φ = 185549832.

The previous prime is 201012319. The next prime is 201012347. The reversal of 201012331 is 133210102.

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

It is not a de Polignac number, because 201012331 - 2¹¹ = 201010283 is a prime.

It is a super-2 number, since 2×201012331² = 80811914428107122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 15462487 = 201012331 / (2 + 0 + 1 + 0 + 1 + 2 + 3 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201012391) 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, 7731231 + ... + 7731256.

It is an arithmetic number, because the mean of its divisors is an integer number (54118708).

Almost surely, 2^201012331 is an apocalyptic number.

201012331 is a deficient number, since it is larger than the sum of its proper divisors (15462501).

201012331 is a wasteful number, since it uses less digits than its factorization.

201012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15462500.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 201012331 is about 14177.8817529277. The cubic root of 201012331 is about 585.7885788116.

Adding to 201012331 its reverse (133210102), we get a palindrome (334222433).

It can be divided in two parts, 2010 and 12331, that added together give a palindrome (14341).

The spelling of 201012331 in words is "two hundred one million, twelve thousand, three hundred thirty-one".