2123030242531 has 8 divisors (see below), whose sum is σ = 2316097427904. Its totient is φ = 1929973796520.

The previous prime is 2123030242493. The next prime is 2123030242573. The reversal of 2123030242531 is 1352420303212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2123030242531 - 2⁹ = 2123030242019 is a prime.

It is a super-2 number, since 2×2123030242531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123030242531.

It is not an unprimeable number, because it can be changed into a prime (2123030242331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2268685 + ... + 3064798.

It is an arithmetic number, because the mean of its divisors is an integer number (289512178488).

Almost surely, 2^{2123030242531} is an apocalyptic number.

2123030242531 is a deficient number, since it is larger than the sum of its proper divisors (193067185373).

2123030242531 is a wasteful number, since it uses less digits than its factorization.

2123030242531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369681.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 2123030242531 its reverse (1352420303212), we get a palindrome (3475450545743).

The spelling of 2123030242531 in words is "two trillion, one hundred twenty-three billion, thirty million, two hundred forty-two thousand, five hundred thirty-one".