1231134163908 has 48 divisors (see below), whose sum is σ = 3133879694400. Its totient is φ = 373061001600.

The previous prime is 1231134163907. The next prime is 1231134163933. The reversal of 1231134163908 is 8093614311321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231134163908.

It is not an unprimeable number, because it can be changed into a prime (1231134163907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5963778 + ... + 6166758.

It is an arithmetic number, because the mean of its divisors is an integer number (65289160300).

Almost surely, 2^{1231134163908} is an apocalyptic number.

It is an amenable number.

1231134163908 is an abundant number, since it is smaller than the sum of its proper divisors (1902745530492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231134163908 is a wasteful number, since it uses less digits than its factorization.

1231134163908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248948 (or 248946 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 1231134163908 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-four million, one hundred sixty-three thousand, nine hundred eight".