131023121434 has 8 divisors (see below), whose sum is σ = 196855295220. Its totient is φ = 65404689696.

The previous prime is 131023121431. The next prime is 131023121473. The reversal of 131023121434 is 434121320131.

It can be written as a sum of positive squares in 2 ways, for example, as 116659818025 + 14363303409 = 341555^2 + 119847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 131023121399 and 131023121408.

It is not an unprimeable number, because it can be changed into a prime (131023121431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53433979 + ... + 53436430.

Almost surely, 2^131023121434 is an apocalyptic number.

131023121434 is a deficient number, since it is larger than the sum of its proper divisors (65832173786).

131023121434 is a wasteful number, since it uses less digits than its factorization.

131023121434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106871024.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 131023121434 its reverse (434121320131), we get a palindrome (565144441565).

The spelling of 131023121434 in words is "one hundred thirty-one billion, twenty-three million, one hundred twenty-one thousand, four hundred thirty-four".