2521214831 has 4 divisors (see below), whose sum is σ = 2521315272. Its totient is φ = 2521114392.

The previous prime is 2521214827. The next prime is 2521214881. The reversal of 2521214831 is 1384121252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2521214831 - 2² = 2521214827 is a prime.

It is a super-2 number, since 2×2521214831² = 12713048448108717122, 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 = 2521214794 and 2521214803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521214881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23741 + ... + 74873.

It is an arithmetic number, because the mean of its divisors is an integer number (630328818).

Almost surely, 2^2521214831 is an apocalyptic number.

2521214831 is a deficient number, since it is larger than the sum of its proper divisors (100441).

2521214831 is an equidigital number, since it uses as much as digits as its factorization.

2521214831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100440.

The product of its digits is 3840, while the sum is 29.

The square root of 2521214831 is about 50211.7001405051. The cubic root of 2521214831 is about 1361.0370606016.

The spelling of 2521214831 in words is "two billion, five hundred twenty-one million, two hundred fourteen thousand, eight hundred thirty-one".