1306431433431 has 6 divisors (see below), whose sum is σ = 1887067626080. Its totient is φ = 870954288948.

The previous prime is 1306431433403. The next prime is 1306431433441. The reversal of 1306431433431 is 1343341346031.

1306431433431 is a `hidden beast` number, since 1 + 3 + 0 + 6 + 4 + 314 + 334 + 3 + 1 = 666.

It is not a de Polignac number, because 1306431433431 - 2⁶ = 1306431433367 is a prime.

It is a super-2 number, since 2×1306431433431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306431433441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72579524071 + ... + 72579524088.

Almost surely, 2^{1306431433431} is an apocalyptic number.

1306431433431 is a deficient number, since it is larger than the sum of its proper divisors (580636192649).

1306431433431 is a wasteful number, since it uses less digits than its factorization.

1306431433431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145159048165 (or 145159048162 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

Adding to 1306431433431 its reverse (1343341346031), we get a palindrome (2649772779462).

The spelling of 1306431433431 in words is "one trillion, three hundred six billion, four hundred thirty-one million, four hundred thirty-three thousand, four hundred thirty-one".