131305055 has 12 divisors (see below), whose sum is σ = 183291480. Its totient is φ = 90037584.

The previous prime is 131305049. The next prime is 131305061. The reversal of 131305055 is 550503131.

131305055 is nontrivially palindromic in base 2.

It is an interprime number because it is at equal distance from previous prime (131305049) and next prime (131305061).

It is not a de Polignac number, because 131305055 - 2⁸ = 131304799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131305055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267725 + ... + 268214.

It is an arithmetic number, because the mean of its divisors is an integer number (15274290).

Almost surely, 2^131305055 is an apocalyptic number.

131305055 is a deficient number, since it is larger than the sum of its proper divisors (51986425).

131305055 is an equidigital number, since it uses as much as digits as its factorization.

131305055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535958 (or 535951 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 131305055 is about 11458.8417826585. The cubic root of 131305055 is about 508.2692258730.

Adding to 131305055 its reverse (550503131), we get a palindrome (681808186).

The spelling of 131305055 in words is "one hundred thirty-one million, three hundred five thousand, fifty-five".