1084905431 has 2 divisors, whose sum is σ = 1084905432. Its totient is φ = 1084905430.

The previous prime is 1084905427. The next prime is 1084905443. The reversal of 1084905431 is 1345094801.

It is a weak prime.

It is an emirp because it is prime and its reverse (1345094801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1084905431 - 2² = 1084905427 is a prime.

It is a super-2 number, since 2×1084905431² = 2354039588426591522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1084905391 and 1084905400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1084905401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542452715 + 542452716.

It is an arithmetic number, because the mean of its divisors is an integer number (542452716).

Almost surely, 2^1084905431 is an apocalyptic number.

1084905431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1084905431 is an equidigital number, since it uses as much as digits as its factorization.

1084905431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1084905431 is about 32937.9026502903. The cubic root of 1084905431 is about 1027.5365867275.

The spelling of 1084905431 in words is "one billion, eighty-four million, nine hundred five thousand, four hundred thirty-one".