203125212413 has 4 divisors (see below), whose sum is σ = 203127584928. Its totient is φ = 203122839900.

The previous prime is 203125212403. The next prime is 203125212421. The reversal of 203125212413 is 314212521302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314212521302 = 2 ⋅157106260651.

It is a cyclic number.

It is not a de Polignac number, because 203125212413 - 2¹⁶ = 203125146877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203125212403) 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, 1052831 + ... + 1230732.

It is an arithmetic number, because the mean of its divisors is an integer number (50781896232).

Almost surely, 2^203125212413 is an apocalyptic number.

It is an amenable number.

203125212413 is a deficient number, since it is larger than the sum of its proper divisors (2372515).

203125212413 is an equidigital number, since it uses as much as digits as its factorization.

203125212413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372514.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 203125212413 its reverse (314212521302), we get a palindrome (517337733715).

The spelling of 203125212413 in words is "two hundred three billion, one hundred twenty-five million, two hundred twelve thousand, four hundred thirteen".