13231322031 has 16 divisors (see below), whose sum is σ = 17985024000. Its totient is φ = 8650750368.

The previous prime is 13231321997. The next prime is 13231322081. The reversal of 13231322031 is 13022313231.

It is not a de Polignac number, because 13231322031 - 2¹⁹ = 13230797743 is a prime.

It is a super-2 number, since 2×13231322031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13231321989 and 13231322007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231322081) 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, 152031 + ... + 222656.

It is an arithmetic number, because the mean of its divisors is an integer number (1124064000).

Almost surely, 2^13231322031 is an apocalyptic number.

13231322031 is a deficient number, since it is larger than the sum of its proper divisors (4753701969).

13231322031 is a wasteful number, since it uses less digits than its factorization.

13231322031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374918.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13231322031 its reverse (13022313231), we get a palindrome (26253635262).

The spelling of 13231322031 in words is "thirteen billion, two hundred thirty-one million, three hundred twenty-two thousand, thirty-one".