203240501520131 has 4 divisors (see below), whose sum is σ = 203240640213000. Its totient is φ = 203240362827264.

The previous prime is 203240501520109. The next prime is 203240501520139. The reversal of 203240501520131 is 131025105042302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203240501520131 is a prime.

It is a super-2 number, since 2×203240501520131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203240501520094 and 203240501520103.

It is not an unprimeable number, because it can be changed into a prime (203240501520139) 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, 67124606 + ... + 70087043.

It is an arithmetic number, because the mean of its divisors is an integer number (50810160053250).

Almost surely, 2^{203240501520131} is an apocalyptic number.

203240501520131 is a deficient number, since it is larger than the sum of its proper divisors (138692869).

203240501520131 is a wasteful number, since it uses less digits than its factorization.

203240501520131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138692868.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 203240501520131 its reverse (131025105042302), we get a palindrome (334265606562433).

The spelling of 203240501520131 in words is "two hundred three trillion, two hundred forty billion, five hundred one million, five hundred twenty thousand, one hundred thirty-one".