1340626231 has 12 divisors (see below), whose sum is σ = 1627309872. Its totient is φ = 1099146048.

The previous prime is 1340626211. The next prime is 1340626253. The reversal of 1340626231 is 1326260431.

It is not a de Polignac number, because 1340626231 - 2¹¹ = 1340624183 is a prime.

It is a super-2 number, since 2×1340626231² = 3594557382490530722, 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 1340626231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340626201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 593650 + ... + 595903.

It is an arithmetic number, because the mean of its divisors is an integer number (135609156).

Almost surely, 2^1340626231 is an apocalyptic number.

1340626231 is a deficient number, since it is larger than the sum of its proper divisors (286683641).

1340626231 is a wasteful number, since it uses less digits than its factorization.

1340626231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189590 (or 1189583 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1340626231 is about 36614.5630999470. The cubic root of 1340626231 is about 1102.6454868055.

Adding to 1340626231 its reverse (1326260431), we get a palindrome (2666886662).

The spelling of 1340626231 in words is "one billion, three hundred forty million, six hundred twenty-six thousand, two hundred thirty-one".