2122545431 has 4 divisors (see below), whose sum is σ = 2162593512. Its totient is φ = 2082497352.

The previous prime is 2122545407. The next prime is 2122545437. The reversal of 2122545431 is 1345452212.

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 2122545431 - 2¹⁴ = 2122529047 is a prime.

It is a super-2 number, since 2×2122545431² = 9010398213317951522, 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 = 2122545394 and 2122545403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122545437) 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, 20023961 + ... + 20024066.

It is an arithmetic number, because the mean of its divisors is an integer number (540648378).

Almost surely, 2^2122545431 is an apocalyptic number.

2122545431 is a deficient number, since it is larger than the sum of its proper divisors (40048081).

2122545431 is an equidigital number, since it uses as much as digits as its factorization.

2122545431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40048080.

The product of its digits is 9600, while the sum is 29.

The square root of 2122545431 is about 46071.0910550206. The cubic root of 2122545431 is about 1285.1455937825.

Adding to 2122545431 its reverse (1345452212), we get a palindrome (3467997643).

The spelling of 2122545431 in words is "two billion, one hundred twenty-two million, five hundred forty-five thousand, four hundred thirty-one".