1340013481 has 4 divisors (see below), whose sum is σ = 1341400192. Its totient is φ = 1338626772.

The previous prime is 1340013463. The next prime is 1340013583. The reversal of 1340013481 is 1843100431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1340013481 - 2¹⁷ = 1339882409 is a prime.

It is a super-2 number, since 2×1340013481² = 3591272258523474722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340013401) 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, 691905 + ... + 693838.

It is an arithmetic number, because the mean of its divisors is an integer number (335350048).

Almost surely, 2^1340013481 is an apocalyptic number.

It is an amenable number.

1340013481 is a deficient number, since it is larger than the sum of its proper divisors (1386711).

1340013481 is an equidigital number, since it uses as much as digits as its factorization.

1340013481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386710.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1340013481 is about 36606.1945714110. The cubic root of 1340013481 is about 1102.4774685639.

The spelling of 1340013481 in words is "one billion, three hundred forty million, thirteen thousand, four hundred eighty-one".