131037618 has 16 divisors (see below), whose sum is σ = 263098080. Its totient is φ = 43508736.

The previous prime is 131037587. The next prime is 131037619. The reversal of 131037618 is 816730131.

It is a super-2 number, since 2×131037618² = 34341714662227848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131037619) 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, 40948 + ... + 44031.

It is an arithmetic number, because the mean of its divisors is an integer number (16443630).

Almost surely, 2^131037618 is an apocalyptic number.

131037618 is an abundant number, since it is smaller than the sum of its proper divisors (132060462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131037618 is a wasteful number, since it uses less digits than its factorization.

131037618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85241.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 131037618 is about 11447.1663742605. The cubic root of 131037618 is about 507.9239170368.

Adding to 131037618 its reverse (816730131), we get a palindrome (947767749).

The spelling of 131037618 in words is "one hundred thirty-one million, thirty-seven thousand, six hundred eighteen".