1310401331531 has 2 divisors, whose sum is σ = 1310401331532.
Its totient is φ = 1310401331530.
The previous prime is 1310401331497. The next prime is 1310401331537. The reversal of 1310401331531 is 1351331040131.
Adding to 1310401331531 its reverse (1351331040131), we get a palindrome (2661732371662).
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1310401331531 - 210 = 1310401330507 is a prime.
It is a super-2 number, since 2×13104013315312 (a number of 25 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 1310401331531.
It is not a weakly prime, because it can be changed into another prime (1310401331537) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655200665765 + 655200665766.
It is an arithmetic number, because the mean of its divisors is an integer number (655200665766).
Almost surely, 21310401331531 is an apocalyptic number.
1310401331531 is a deficient number, since it is larger than the sum of its proper divisors (1).
1310401331531 is an equidigital number, since it uses as much as digits as its factorization.
1310401331531 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1620, while the sum is 26.
The spelling of 1310401331531 in words is "one trillion, three hundred ten billion, four hundred one million, three hundred thirty-one thousand, five hundred thirty-one".