1231342331240 has 128 divisors (see below), whose sum is σ = 3172707878400. Its totient is φ = 421322342400.

The previous prime is 1231342331237. The next prime is 1231342331243. The reversal of 1231342331240 is 421332431321.

It is an interprime number because it is at equal distance from previous prime (1231342331237) and next prime (1231342331243).

It is not an unprimeable number, because it can be changed into a prime (1231342331243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463431992 + ... + 463434648.

It is an arithmetic number, because the mean of its divisors is an integer number (24786780300).

Almost surely, 2^{1231342331240} is an apocalyptic number.

1231342331240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231342331240 is an abundant number, since it is smaller than the sum of its proper divisors (1941365547160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231342331240 is a wasteful number, since it uses less digits than its factorization.

1231342331240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395 (or 5391 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 1231342331240 its reverse (421332431321), we get a palindrome (1652674762561).

The spelling of 1231342331240 in words is "one trillion, two hundred thirty-one billion, three hundred forty-two million, three hundred thirty-one thousand, two hundred forty".