1325431013231 has 4 divisors (see below), whose sum is σ = 1427387245032. Its totient is φ = 1223474781432.

The previous prime is 1325431013219. The next prime is 1325431013251. The reversal of 1325431013231 is 1323101345231.

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 1325431013231 - 2³⁰ = 1324357271407 is a prime.

It is a super-2 number, since 2×1325431013231² (a number of 25 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 = 1325431013194 and 1325431013203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325431013201) 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, 50978115881 + ... + 50978115906.

It is an arithmetic number, because the mean of its divisors is an integer number (356846811258).

Almost surely, 2^{1325431013231} is an apocalyptic number.

1325431013231 is a deficient number, since it is larger than the sum of its proper divisors (101956231801).

1325431013231 is a wasteful number, since it uses less digits than its factorization.

1325431013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101956231800.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 1325431013231 its reverse (1323101345231), we get a palindrome (2648532358462).

The spelling of 1325431013231 in words is "one trillion, three hundred twenty-five billion, four hundred thirty-one million, thirteen thousand, two hundred thirty-one".