5131203121 has 8 divisors (see below), whose sum is σ = 5598198144. Its totient is φ = 4664295120.

The previous prime is 5131203079. The next prime is 5131203127. The reversal of 5131203121 is 1213021315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5131203121 - 2¹⁷ = 5131072049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5131203127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198855 + ... + 223171.

It is an arithmetic number, because the mean of its divisors is an integer number (699774768).

Almost surely, 2^5131203121 is an apocalyptic number.

It is an amenable number.

5131203121 is a deficient number, since it is larger than the sum of its proper divisors (466995023).

5131203121 is a wasteful number, since it uses less digits than its factorization.

5131203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43511.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 5131203121 is about 71632.4166910485. The cubic root of 5131203121 is about 1724.8039400219.

Adding to 5131203121 its reverse (1213021315), we get a palindrome (6344224436).

The spelling of 5131203121 in words is "five billion, one hundred thirty-one million, two hundred three thousand, one hundred twenty-one".