1231052419 has 4 divisors (see below), whose sum is σ = 1264324144. Its totient is φ = 1197780696.

The previous prime is 1231052411. The next prime is 1231052477. The reversal of 1231052419 is 9142501321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231052419 - 2³ = 1231052411 is a prime.

It is a super-2 number, since 2×1231052419² = 3030980116651503122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231052411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16635807 + ... + 16635880.

It is an arithmetic number, because the mean of its divisors is an integer number (316081036).

Almost surely, 2^1231052419 is an apocalyptic number.

1231052419 is a deficient number, since it is larger than the sum of its proper divisors (33271725).

1231052419 is an equidigital number, since it uses as much as digits as its factorization.

1231052419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33271724.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1231052419 is about 35086.3565934111. The cubic root of 1231052419 is about 1071.7467666284.

The spelling of 1231052419 in words is "one billion, two hundred thirty-one million, fifty-two thousand, four hundred nineteen".