1243231145967 has 16 divisors (see below), whose sum is σ = 1674109916640. Its totient is φ = 820587120000.

The previous prime is 1243231145899. The next prime is 1243231145969. The reversal of 1243231145967 is 7695411323421.

It is not a de Polignac number, because 1243231145967 - 2²⁷ = 1243096928239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243231145969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13221217 + ... + 13314917.

It is an arithmetic number, because the mean of its divisors is an integer number (104631869790).

Almost surely, 2^{1243231145967} is an apocalyptic number.

1243231145967 is a deficient number, since it is larger than the sum of its proper divisors (430878770673).

1243231145967 is a wasteful number, since it uses less digits than its factorization.

1243231145967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137594.

The product of its digits is 1088640, while the sum is 48.

The spelling of 1243231145967 in words is "one trillion, two hundred forty-three billion, two hundred thirty-one million, one hundred forty-five thousand, nine hundred sixty-seven".