131513223455 has 4 divisors (see below), whose sum is σ = 157815868152. Its totient is φ = 105210578760.

The previous prime is 131513223449. The next prime is 131513223461. The reversal of 131513223455 is 554322315131.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (131513223449) and next prime (131513223461).

It is a de Polignac number, because none of the positive numbers 2^k-131513223455 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 13151322341 + ... + 13151322350.

It is an arithmetic number, because the mean of its divisors is an integer number (39453967038).

Almost surely, 2^131513223455 is an apocalyptic number.

131513223455 is a deficient number, since it is larger than the sum of its proper divisors (26302644697).

131513223455 is an equidigital number, since it uses as much as digits as its factorization.

131513223455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26302644696.

The product of its digits is 54000, while the sum is 35.

Adding to 131513223455 its reverse (554322315131), we get a palindrome (685835538586).

The spelling of 131513223455 in words is "one hundred thirty-one billion, five hundred thirteen million, two hundred twenty-three thousand, four hundred fifty-five".