1340431052 has 6 divisors (see below), whose sum is σ = 2345754348. Its totient is φ = 670215524.

The previous prime is 1340431031. The next prime is 1340431061. The reversal of 1340431052 is 2501340431.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167553878 + ... + 167553885.

It is an arithmetic number, because the mean of its divisors is an integer number (390959058).

Almost surely, 2^1340431052 is an apocalyptic number.

It is an amenable number.

1340431052 is a deficient number, since it is larger than the sum of its proper divisors (1005323296).

1340431052 is a wasteful number, since it uses less digits than its factorization.

1340431052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335107767 (or 335107765 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1340431052 is about 36611.8976836765. The cubic root of 1340431052 is about 1102.5919735832.

Adding to 1340431052 its reverse (2501340431), we get a palindrome (3841771483).

The spelling of 1340431052 in words is "one billion, three hundred forty million, four hundred thirty-one thousand, fifty-two".