431041531 has 2 divisors, whose sum is σ = 431041532. Its totient is φ = 431041530.

The previous prime is 431041469. The next prime is 431041537. The reversal of 431041531 is 135140134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431041531 is a prime.

It is a super-2 number, since 2×431041531² = 371593602893647922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (431041537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215520765 + 215520766.

It is an arithmetic number, because the mean of its divisors is an integer number (215520766).

Almost surely, 2^431041531 is an apocalyptic number.

431041531 is a deficient number, since it is larger than the sum of its proper divisors (1).

431041531 is an equidigital number, since it uses as much as digits as its factorization.

431041531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 431041531 is about 20761.5397068715. The cubic root of 431041531 is about 755.3931440760.

Adding to 431041531 its reverse (135140134), we get a palindrome (566181665).

The spelling of 431041531 in words is "four hundred thirty-one million, forty-one thousand, five hundred thirty-one".