131026550 has 12 divisors (see below), whose sum is σ = 243709476. Its totient is φ = 52410600.

The previous prime is 131026541. The next prime is 131026559. The reversal of 131026550 is 55620131.

It is an interprime number because it is at equal distance from previous prime (131026541) and next prime (131026559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131026559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1310216 + ... + 1310315.

It is an arithmetic number, because the mean of its divisors is an integer number (20309123).

Almost surely, 2^131026550 is an apocalyptic number.

131026550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131026550 is a deficient number, since it is larger than the sum of its proper divisors (112682926).

131026550 is a wasteful number, since it uses less digits than its factorization.

131026550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620543 (or 2620538 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131026550 is about 11446.6829256340. The cubic root of 131026550 is about 507.9096161557.

Adding to 131026550 its reverse (55620131), we get a palindrome (186646681).

The spelling of 131026550 in words is "one hundred thirty-one million, twenty-six thousand, five hundred fifty".