219115252831 has 2 divisors, whose sum is σ = 219115252832. Its totient is φ = 219115252830.

The previous prime is 219115252771. The next prime is 219115252843. The reversal of 219115252831 is 138252511912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 219115252831 - 2¹⁵ = 219115220063 is a prime.

It is a super-2 number, since 2×219115252831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219115262831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109557626415 + 109557626416.

It is an arithmetic number, because the mean of its divisors is an integer number (109557626416).

Almost surely, 2^219115252831 is an apocalyptic number.

219115252831 is a deficient number, since it is larger than the sum of its proper divisors (1).

219115252831 is an equidigital number, since it uses as much as digits as its factorization.

219115252831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 40.

The spelling of 219115252831 in words is "two hundred nineteen billion, one hundred fifteen million, two hundred fifty-two thousand, eight hundred thirty-one".