531051431 has 2 divisors, whose sum is σ = 531051432. Its totient is φ = 531051430.

The previous prime is 531051427. The next prime is 531051473. The reversal of 531051431 is 134150135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531051431 - 2² = 531051427 is a prime.

It is a super-2 number, since 2×531051431² = 564031244734295522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531051397 and 531051406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531050431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265525715 + 265525716.

It is an arithmetic number, because the mean of its divisors is an integer number (265525716).

Almost surely, 2^531051431 is an apocalyptic number.

531051431 is a deficient number, since it is larger than the sum of its proper divisors (1).

531051431 is an equidigital number, since it uses as much as digits as its factorization.

531051431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 531051431 is about 23044.5531742319. The cubic root of 531051431 is about 809.8020300620.

The spelling of 531051431 in words is "five hundred thirty-one million, fifty-one thousand, four hundred thirty-one".