131402433521530 has 32 divisors (see below), whose sum is σ = 237122126526096. Its totient is φ = 52428218740224.

The previous prime is 131402433521521. The next prime is 131402433521551. The reversal of 131402433521530 is 35125334204131.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 53585635488841 + 77816798032689 = 7320221^2 + 8821383^2 .

It is a super-2 number, since 2×131402433521530² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131402433521530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8651592 + ... + 18375388.

Almost surely, 2^{131402433521530} is an apocalyptic number.

131402433521530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131402433521530 is a deficient number, since it is larger than the sum of its proper divisors (105719693004566).

131402433521530 is a wasteful number, since it uses less digits than its factorization.

131402433521530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9727218.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 131402433521530 its reverse (35125334204131), we get a palindrome (166527767725661).

The spelling of 131402433521530 in words is "one hundred thirty-one trillion, four hundred two billion, four hundred thirty-three million, five hundred twenty-one thousand, five hundred thirty".