125543131303 has 4 divisors (see below), whose sum is σ = 126342769240. Its totient is φ = 124743493368.

The previous prime is 125543131243. The next prime is 125543131321. The reversal of 125543131303 is 303131345521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303131345521 = 17609 ⋅17214569.

It is a cyclic number.

It is not a de Polignac number, because 125543131303 - 2²⁹ = 125006260391 is a prime.

It is a super-2 number, since 2×125543131303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125543191303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399818733 + ... + 399819046.

It is an arithmetic number, because the mean of its divisors is an integer number (31585692310).

Almost surely, 2^125543131303 is an apocalyptic number.

125543131303 is a deficient number, since it is larger than the sum of its proper divisors (799637937).

125543131303 is an equidigital number, since it uses as much as digits as its factorization.

125543131303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799637936.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 125543131303 its reverse (303131345521), we get a palindrome (428674476824).

The spelling of 125543131303 in words is "one hundred twenty-five billion, five hundred forty-three million, one hundred thirty-one thousand, three hundred three".