131081554 has 16 divisors (see below), whose sum is σ = 205416000. Its totient is φ = 62616400.

The previous prime is 131081519. The next prime is 131081557. The reversal of 131081554 is 455180131.

It is not an unprimeable number, because it can be changed into a prime (131081557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68004 + ... + 69904.

It is an arithmetic number, because the mean of its divisors is an integer number (12838500).

Almost surely, 2^131081554 is an apocalyptic number.

131081554 is a deficient number, since it is larger than the sum of its proper divisors (74334446).

131081554 is a wasteful number, since it uses less digits than its factorization.

131081554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 131081554 is about 11449.0852909741. The cubic root of 131081554 is about 507.9806784765.

The spelling of 131081554 in words is "one hundred thirty-one million, eighty-one thousand, five hundred fifty-four".