1340633141 has 24 divisors (see below), whose sum is σ = 1550964000. Its totient is φ = 1154006784.

The previous prime is 1340633137. The next prime is 1340633143. The reversal of 1340633141 is 1413360431.

It is not a de Polignac number, because 1340633141 - 2² = 1340633137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340633141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340633143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155030 + ... + 163448.

It is an arithmetic number, because the mean of its divisors is an integer number (64623500).

Almost surely, 2^1340633141 is an apocalyptic number.

It is an amenable number.

1340633141 is a deficient number, since it is larger than the sum of its proper divisors (210330859).

1340633141 is a wasteful number, since it uses less digits than its factorization.

1340633141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8501 (or 8484 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1340633141 is about 36614.6574611862. The cubic root of 1340633141 is about 1102.6473812602.

Adding to 1340633141 its reverse (1413360431), we get a palindrome (2753993572).

The spelling of 1340633141 in words is "one billion, three hundred forty million, six hundred thirty-three thousand, one hundred forty-one".