2103313531 has 4 divisors (see below), whose sum is σ = 2294523864. Its totient is φ = 1912103200.

The previous prime is 2103313529. The next prime is 2103313549. The reversal of 2103313531 is 1353133012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2103313531 - 2¹ = 2103313529 is a prime.

It is a super-2 number, since 2×2103313531² = 8847855619375375922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103313501) 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, 95605150 + ... + 95605171.

It is an arithmetic number, because the mean of its divisors is an integer number (573630966).

Almost surely, 2^2103313531 is an apocalyptic number.

2103313531 is a deficient number, since it is larger than the sum of its proper divisors (191210333).

2103313531 is a wasteful number, since it uses less digits than its factorization.

2103313531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191210332.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 2103313531 is about 45861.8962865689. The cubic root of 2103313531 is about 1281.2523410118.

Adding to 2103313531 its reverse (1353133012), we get a palindrome (3456446543).

The spelling of 2103313531 in words is "two billion, one hundred three million, three hundred thirteen thousand, five hundred thirty-one".