1231568700134 has 4 divisors (see below), whose sum is σ = 1847353050204. Its totient is φ = 615784350066.

The previous prime is 1231568700133. The next prime is 1231568700191. The reversal of 1231568700134 is 4310078651321.

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

It is a super-2 number, since 2×1231568700134² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231568700091 and 1231568700100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231568700133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307892175032 + ... + 307892175035.

It is an arithmetic number, because the mean of its divisors is an integer number (461838262551).

Almost surely, 2^{1231568700134} is an apocalyptic number.

1231568700134 is a deficient number, since it is larger than the sum of its proper divisors (615784350070).

1231568700134 is an equidigital number, since it uses as much as digits as its factorization.

1231568700134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615784350069.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 1231568700134 in words is "one trillion, two hundred thirty-one billion, five hundred sixty-eight million, seven hundred thousand, one hundred thirty-four".