131021304404 has 24 divisors (see below), whose sum is σ = 231540367968. Its totient is φ = 64867497120.

The previous prime is 131021304391. The next prime is 131021304433. The reversal of 131021304404 is 404403120131.

It is a self number, because there is not a number n which added to its sum of digits gives 131021304404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840242 + ... + 983894.

It is an arithmetic number, because the mean of its divisors is an integer number (9647515332).

Almost surely, 2^131021304404 is an apocalyptic number.

It is an amenable number.

131021304404 is a deficient number, since it is larger than the sum of its proper divisors (100519063564).

131021304404 is a wasteful number, since it uses less digits than its factorization.

131021304404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145895 (or 145893 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 131021304404 its reverse (404403120131), we get a palindrome (535424424535).

The spelling of 131021304404 in words is "one hundred thirty-one billion, twenty-one million, three hundred four thousand, four hundred four".