131310431306 has 12 divisors (see below), whose sum is σ = 209233404438. Its totient is φ = 61793143872.

The previous prime is 131310431269. The next prime is 131310431333. The reversal of 131310431306 is 603134013131.

It can be written as a sum of positive squares in 3 ways, for example, as 105619150081 + 25691281225 = 324991^2 + 160285^2 .

It is a super-3 number, since 3×131310431306³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113589761 + ... + 113590916.

Almost surely, 2^131310431306 is an apocalyptic number.

131310431306 is a deficient number, since it is larger than the sum of its proper divisors (77922973132).

131310431306 is a wasteful number, since it uses less digits than its factorization.

131310431306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227180713 (or 227180696 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 131310431306 its reverse (603134013131), we get a palindrome (734444444437).

The spelling of 131310431306 in words is "one hundred thirty-one billion, three hundred ten million, four hundred thirty-one thousand, three hundred six".