131223113111311 has 24 divisors (see below), whose sum is σ = 142344958573440. Its totient is φ = 120914838529056.

The previous prime is 131223113111257. The next prime is 131223113111327. The reversal of 131223113111311 is 113111311322131.

It is not a de Polignac number, because 131223113111311 - 2¹³ = 131223113103119 is a prime.

It is a super-2 number, since 2×131223113111311² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131223143111311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2002181380 + ... + 2002246918.

It is an arithmetic number, because the mean of its divisors is an integer number (5931039940560).

Almost surely, 2^{131223113111311} is an apocalyptic number.

131223113111311 is a deficient number, since it is larger than the sum of its proper divisors (11121845462129).

131223113111311 is a wasteful number, since it uses less digits than its factorization.

131223113111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86335 (or 86322 counting only the distinct ones).

The product of its digits is 324, while the sum is 25.

Adding to 131223113111311 its reverse (113111311322131), we get a palindrome (244334424433442).

The spelling of 131223113111311 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, one hundred thirteen million, one hundred eleven thousand, three hundred eleven".