2531131219 has 2 divisors, whose sum is σ = 2531131220. Its totient is φ = 2531131218.

The previous prime is 2531131201. The next prime is 2531131247. The reversal of 2531131219 is 9121311352.

It is an a-pointer prime, because the next prime (2531131247) can be obtained adding 2531131219 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2531131219 - 2¹¹ = 2531129171 is a prime.

It is a super-2 number, since 2×2531131219² = 12813250495592851922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2531131259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265565609 + 1265565610.

It is an arithmetic number, because the mean of its divisors is an integer number (1265565610).

Almost surely, 2^2531131219 is an apocalyptic number.

2531131219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531131219 is an equidigital number, since it uses as much as digits as its factorization.

2531131219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 2531131219 is about 50310.3490248279. The cubic root of 2531131219 is about 1362.8191268189.

The spelling of 2531131219 in words is "two billion, five hundred thirty-one million, one hundred thirty-one thousand, two hundred nineteen".