5121031231523 has 16 divisors (see below), whose sum is σ = 5234787492480. Its totient is φ = 5007477167616.

The previous prime is 5121031231457. The next prime is 5121031231541. The reversal of 5121031231523 is 3251321301215.

It is a cyclic number.

It is not a de Polignac number, because 5121031231523 - 2¹⁰ = 5121031230499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5121031231543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256131215 + ... + 256151207.

It is an arithmetic number, because the mean of its divisors is an integer number (327174218280).

Almost surely, 2^{5121031231523} is an apocalyptic number.

5121031231523 is a deficient number, since it is larger than the sum of its proper divisors (113756260957).

5121031231523 is a wasteful number, since it uses less digits than its factorization.

5121031231523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24766.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 5121031231523 its reverse (3251321301215), we get a palindrome (8372352532738).

The spelling of 5121031231523 in words is "five trillion, one hundred twenty-one billion, thirty-one million, two hundred thirty-one thousand, five hundred twenty-three".