1340460431 has 8 divisors (see below), whose sum is σ = 1417177200. Its totient is φ = 1264360320.

The previous prime is 1340460413. The next prime is 1340460439. The reversal of 1340460431 is 1340640431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1340460431 is a prime.

It is a super-2 number, since 2×1340460431² = 3593668334153411522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340460431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340460439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149690 + ... + 158391.

It is an arithmetic number, because the mean of its divisors is an integer number (177147150).

Almost surely, 2^1340460431 is an apocalyptic number.

1340460431 is a deficient number, since it is larger than the sum of its proper divisors (76716769).

1340460431 is a wasteful number, since it uses less digits than its factorization.

1340460431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308329.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1340460431 is about 36612.2989035106. The cubic root of 1340460431 is about 1102.6000289056.

The spelling of 1340460431 in words is "one billion, three hundred forty million, four hundred sixty thousand, four hundred thirty-one".