131023013228 has 12 divisors (see below), whose sum is σ = 230376958392. Its totient is φ = 65201025120.

The previous prime is 131023013201. The next prime is 131023013249. The reversal of 131023013228 is 822310320131.

It is a junction number, because it is equal to n+sod(n) for n = 131023013197 and 131023013206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77619425 + ... + 77621112.

It is an arithmetic number, because the mean of its divisors is an integer number (19198079866).

Almost surely, 2^131023013228 is an apocalyptic number.

It is an amenable number.

131023013228 is a deficient number, since it is larger than the sum of its proper divisors (99353945164).

131023013228 is a wasteful number, since it uses less digits than its factorization.

131023013228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155240752 (or 155240750 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 131023013228 its reverse (822310320131), we get a palindrome (953333333359).

The spelling of 131023013228 in words is "one hundred thirty-one billion, twenty-three million, thirteen thousand, two hundred twenty-eight".