1531125430000 has 50 divisors (see below), whose sum is σ = 3707007802784. Its totient is φ = 612450168000.

The previous prime is 1531125429989. The next prime is 1531125430061. The reversal of 1531125430000 is 345211351.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 76546272 + ... + 76566271.

Almost surely, 2^{1531125430000} is an apocalyptic number.

1531125430000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531125430000 is an abundant number, since it is smaller than the sum of its proper divisors (2175882372784).

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

1531125430000 is an equidigital number, since it uses as much as digits as its factorization.

1531125430000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153112571 (or 153112550 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 1531125430000 in words is "one trillion, five hundred thirty-one billion, one hundred twenty-five million, four hundred thirty thousand".