2023311531 has 4 divisors (see below), whose sum is σ = 2697748712. Its totient is φ = 1348874352.

The previous prime is 2023311529. The next prime is 2023311547. The reversal of 2023311531 is 1351133202.

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

It is not a de Polignac number, because 2023311531 - 2¹ = 2023311529 is a prime.

It is a super-2 number, since 2×2023311531² = 8187579102955127922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2023311498 and 2023311507.

It is not an unprimeable number, because it can be changed into a prime (2023311571) 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, 337218586 + ... + 337218591.

It is an arithmetic number, because the mean of its divisors is an integer number (674437178).

Almost surely, 2^2023311531 is an apocalyptic number.

2023311531 is a deficient number, since it is larger than the sum of its proper divisors (674437181).

2023311531 is an equidigital number, since it uses as much as digits as its factorization.

2023311531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674437180.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 2023311531 is about 44981.2353209647. The cubic root of 2023311531 is about 1264.7972680994.

Adding to 2023311531 its reverse (1351133202), we get a palindrome (3374444733).

The spelling of 2023311531 in words is "two billion, twenty-three million, three hundred eleven thousand, five hundred thirty-one".