431040931 has 2 divisors, whose sum is σ = 431040932. Its totient is φ = 431040930.

The previous prime is 431040917. The next prime is 431041031. The reversal of 431040931 is 139040134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431040931 - 2⁹ = 431040419 is a prime.

It is a super-2 number, since 2×431040931² = 371592568394693522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431040896 and 431040905.

It is not a weakly prime, because it can be changed into another prime (431040131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215520465 + 215520466.

It is an arithmetic number, because the mean of its divisors is an integer number (215520466).

Almost surely, 2^431040931 is an apocalyptic number.

431040931 is a deficient number, since it is larger than the sum of its proper divisors (1).

431040931 is an equidigital number, since it uses as much as digits as its factorization.

431040931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 431040931 is about 20761.5252570711. The cubic root of 431040931 is about 755.3927935791.

The spelling of 431040931 in words is "four hundred thirty-one million, forty thousand, nine hundred thirty-one".