131030555 has 32 divisors (see below), whose sum is σ = 172800000. Its totient is φ = 95001984.

The previous prime is 131030551. The next prime is 131030561. The reversal of 131030555 is 555030131.

It is a cyclic number.

It is not a de Polignac number, because 131030555 - 2² = 131030551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131030555.

It is not an unprimeable number, because it can be changed into a prime (131030551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548126 + ... + 548364.

It is an arithmetic number, because the mean of its divisors is an integer number (5400000).

Almost surely, 2^131030555 is an apocalyptic number.

131030555 is a deficient number, since it is larger than the sum of its proper divisors (41769445).

131030555 is a wasteful number, since it uses less digits than its factorization.

131030555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491.

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

The square root of 131030555 is about 11446.8578658075. The cubic root of 131030555 is about 507.9147910796.

Adding to 131030555 its reverse (555030131), we get a palindrome (686060686).

The spelling of 131030555 in words is "one hundred thirty-one million, thirty thousand, five hundred fifty-five".