5131232231 has 4 divisors (see below), whose sum is σ = 5142815592. Its totient is φ = 5119648872.

The previous prime is 5131232149. The next prime is 5131232243. The reversal of 5131232231 is 1322321315.

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

It is a cyclic number.

It is not a de Polignac number, because 5131232231 - 2¹⁴ = 5131215847 is a prime.

It is a super-2 number, since 2×5131232231² = 52659088416906474722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5131232197 and 5131232206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131232291) 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, 5791016 + ... + 5791901.

It is an arithmetic number, because the mean of its divisors is an integer number (1285703898).

Almost surely, 2^5131232231 is an apocalyptic number.

5131232231 is a deficient number, since it is larger than the sum of its proper divisors (11583361).

5131232231 is a wasteful number, since it uses less digits than its factorization.

5131232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11583360.

The product of its digits is 1080, while the sum is 23.

The square root of 5131232231 is about 71632.6198808895. The cubic root of 5131232231 is about 1724.8072016967.

Adding to 5131232231 its reverse (1322321315), we get a palindrome (6453553546).

The spelling of 5131232231 in words is "five billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred thirty-one".