131311101213031 has 4 divisors (see below), whose sum is σ = 133160553342864. Its totient is φ = 129461649083200.

The previous prime is 131311101213011. The next prime is 131311101213091. The reversal of 131311101213031 is 130312101113131.

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 131311101213031 - 2⁷ = 131311101212903 is a prime.

It is a super-2 number, since 2×131311101213031² (a number of 29 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 = 131311101212993 and 131311101213011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131311101213001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924726064810 + ... + 924726064951.

It is an arithmetic number, because the mean of its divisors is an integer number (33290138335716).

Almost surely, 2^{131311101213031} is an apocalyptic number.

131311101213031 is a deficient number, since it is larger than the sum of its proper divisors (1849452129833).

131311101213031 is an equidigital number, since it uses as much as digits as its factorization.

131311101213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849452129832.

The product of its (nonzero) digits is 162, while the sum is 22.

Adding to 131311101213031 its reverse (130312101113131), we get a palindrome (261623202326162).

The spelling of 131311101213031 in words is "one hundred thirty-one trillion, three hundred eleven billion, one hundred one million, two hundred thirteen thousand, thirty-one".