1231134253500 has 96 divisors (see below), whose sum is σ = 3613292347392. Its totient is φ = 325717358400.

The previous prime is 1231134253469. The next prime is 1231134253501. The reversal of 1231134253500 is 53524311321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231134253501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3040824 + ... + 3421823.

It is an arithmetic number, because the mean of its divisors is an integer number (37638461952).

Almost surely, 2^{1231134253500} is an apocalyptic number.

1231134253500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231134253500 is an abundant number, since it is smaller than the sum of its proper divisors (2382158093892).

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

1231134253500 is a wasteful number, since it uses less digits than its factorization.

1231134253500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6462796 (or 6462784 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1231134253500 its reverse (53524311321), we get a palindrome (1284658564821).

The spelling of 1231134253500 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-four million, two hundred fifty-three thousand, five hundred".