2122313531 has 4 divisors (see below), whose sum is σ = 2285568432. Its totient is φ = 1959058632.

The previous prime is 2122313519. The next prime is 2122313539. The reversal of 2122313531 is 1353132212.

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 2122313531 - 2³⁰ = 1048571707 is a prime.

It is a super-2 number, since 2×2122313531² = 9008429447731375922, 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 = 2122313497 and 2122313506.

It is not an unprimeable number, because it can be changed into a prime (2122313539) 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, 81627431 + ... + 81627456.

It is an arithmetic number, because the mean of its divisors is an integer number (571392108).

Almost surely, 2^2122313531 is an apocalyptic number.

2122313531 is a deficient number, since it is larger than the sum of its proper divisors (163254901).

2122313531 is a wasteful number, since it uses less digits than its factorization.

2122313531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163254900.

The product of its digits is 1080, while the sum is 23.

The square root of 2122313531 is about 46068.5742236506. The cubic root of 2122313531 is about 1285.0987889551.

Adding to 2122313531 its reverse (1353132212), we get a palindrome (3475445743).

The spelling of 2122313531 in words is "two billion, one hundred twenty-two million, three hundred thirteen thousand, five hundred thirty-one".