131430661330 has 64 divisors (see below), whose sum is σ = 246097686240. Its totient is φ = 50477185024.

The previous prime is 131430661309. The next prime is 131430661333. The reversal of 131430661330 is 33166034131.

It can be written as a sum of positive squares in 16 ways, for example, as 4082315449 + 127348345881 = 63893^2 + 356859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131430661292 and 131430661301.

It is not an unprimeable number, because it can be changed into a prime (131430661333) 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, 47326902 + ... + 47329678.

Almost surely, 2^131430661330 is an apocalyptic number.

131430661330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131430661330 is a deficient number, since it is larger than the sum of its proper divisors (114667024910).

131430661330 is a wasteful number, since it uses less digits than its factorization.

131430661330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663.

The product of its (nonzero) digits is 11664, while the sum is 31.

Adding to 131430661330 its reverse (33166034131), we get a palindrome (164596695461).

The spelling of 131430661330 in words is "one hundred thirty-one billion, four hundred thirty million, six hundred sixty-one thousand, three hundred thirty".