1405052431 has 4 divisors (see below), whose sum is σ = 1487702592. Its totient is φ = 1322402272.

The previous prime is 1405052387. The next prime is 1405052437. The reversal of 1405052431 is 1342505041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1405052431 - 2¹⁵ = 1405019663 is a prime.

It is a super-2 number, since 2×1405052431² = 3948344667718019522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1405052396 and 1405052405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405052437) 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 in 3 ways as a sum of consecutive naturals, for example, 41325055 + ... + 41325088.

It is an arithmetic number, because the mean of its divisors is an integer number (371925648).

Almost surely, 2^1405052431 is an apocalyptic number.

1405052431 is a deficient number, since it is larger than the sum of its proper divisors (82650161).

1405052431 is an equidigital number, since it uses as much as digits as its factorization.

1405052431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82650160.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1405052431 is about 37484.0290123674. The cubic root of 1405052431 is about 1120.0330642343.

Adding to 1405052431 its reverse (1342505041), we get a palindrome (2747557472).

The spelling of 1405052431 in words is "one billion, four hundred five million, fifty-two thousand, four hundred thirty-one".