431313139 has 2 divisors, whose sum is σ = 431313140. Its totient is φ = 431313138.

The previous prime is 431313133. The next prime is 431313151. The reversal of 431313139 is 931313134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431313139 - 2¹⁵ = 431280371 is a prime.

It is not a weakly prime, because it can be changed into another prime (431313133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215656569 + 215656570.

It is an arithmetic number, because the mean of its divisors is an integer number (215656570).

Almost surely, 2^431313139 is an apocalyptic number.

431313139 is a deficient number, since it is larger than the sum of its proper divisors (1).

431313139 is an equidigital number, since it uses as much as digits as its factorization.

431313139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 28.

The square root of 431313139 is about 20768.0798101317. The cubic root of 431313139 is about 755.5517736026.

The spelling of 431313139 in words is "four hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-nine".