1285340703 has 4 divisors (see below), whose sum is σ = 1713787608. Its totient is φ = 856893800.

The previous prime is 1285340657. The next prime is 1285340729. The reversal of 1285340703 is 3070435821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3070435821 = 3 ⋅1023478607.

It is a cyclic number.

It is not a de Polignac number, because 1285340703 - 2¹⁷ = 1285209631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285342703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214223448 + ... + 214223453.

It is an arithmetic number, because the mean of its divisors is an integer number (428446902).

Almost surely, 2^1285340703 is an apocalyptic number.

1285340703 is a deficient number, since it is larger than the sum of its proper divisors (428446905).

1285340703 is an equidigital number, since it uses as much as digits as its factorization.

1285340703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428446904.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 1285340703 is about 35851.6485395023. The cubic root of 1285340703 is about 1087.2750448163.

The spelling of 1285340703 in words is "one billion, two hundred eighty-five million, three hundred forty thousand, seven hundred three".