2531235233421 has 24 divisors (see below), whose sum is σ = 3681036473400. Its totient is φ = 1676042059776.

The previous prime is 2531235233411. The next prime is 2531235233431. The reversal of 2531235233421 is 1243325321352.

2531235233421 is a `hidden beast` number, since 2 + 5 + 3 + 123 + 523 + 3 + 4 + 2 + 1 = 666.

2531235233421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2531235233411) and next prime (2531235233431).

It can be written as a sum of positive squares in 4 ways, for example, as 489179943396 + 2042055290025 = 699414^2 + 1429005^2 .

It is not a de Polignac number, because 2531235233421 - 2⁹ = 2531235232909 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531235233411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20559181 + ... + 20681933.

It is an arithmetic number, because the mean of its divisors is an integer number (153376519725).

Almost surely, 2^{2531235233421} is an apocalyptic number.

It is an amenable number.

2531235233421 is a deficient number, since it is larger than the sum of its proper divisors (1149801239979).

2531235233421 is a wasteful number, since it uses less digits than its factorization.

2531235233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138285 (or 138282 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The spelling of 2531235233421 in words is "two trillion, five hundred thirty-one billion, two hundred thirty-five million, two hundred thirty-three thousand, four hundred twenty-one".