1231342411440 has 40 divisors (see below), whose sum is σ = 3817161476208. Its totient is φ = 328357976320.

The previous prime is 1231342411423. The next prime is 1231342411457. The reversal of 1231342411440 is 441142431321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1231342411423) and next prime (1231342411457).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1231342411398 and 1231342411407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2565296451 + ... + 2565296930.

Almost surely, 2^{1231342411440} is an apocalyptic number.

1231342411440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231342411440 is an abundant number, since it is smaller than the sum of its proper divisors (2585819064768).

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

1231342411440 is a wasteful number, since it uses less digits than its factorization.

1231342411440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130593397 (or 5130593391 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 1231342411440 its reverse (441142431321), we get a palindrome (1672484842761).

The spelling of 1231342411440 in words is "one trillion, two hundred thirty-one billion, three hundred forty-two million, four hundred eleven thousand, four hundred forty".