131122340413 has 4 divisors (see below), whose sum is σ = 131124278428. Its totient is φ = 131120402400.

The previous prime is 131122340411. The next prime is 131122340449. The reversal of 131122340413 is 314043221131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121352599449 + 9769740964 = 348357^2 + 98842^2 .

It is a cyclic number.

It is not a de Polignac number, because 131122340413 - 2¹ = 131122340411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122340411) 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, 863706 + ... + 1004107.

It is an arithmetic number, because the mean of its divisors is an integer number (32781069607).

Almost surely, 2^131122340413 is an apocalyptic number.

It is an amenable number.

131122340413 is a deficient number, since it is larger than the sum of its proper divisors (1938015).

131122340413 is an equidigital number, since it uses as much as digits as its factorization.

131122340413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938014.

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

Adding to 131122340413 its reverse (314043221131), we get a palindrome (445165561544).

The spelling of 131122340413 in words is "one hundred thirty-one billion, one hundred twenty-two million, three hundred forty thousand, four hundred thirteen".