1231532340024 has 64 divisors (see below), whose sum is σ = 3541075776000. Its totient is φ = 349625188224.

The previous prime is 1231532340023. The next prime is 1231532340037. The reversal of 1231532340024 is 4200432351321.

It is a junction number, because it is equal to n+sod(n) for n = 1231532339973 and 1231532340000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231532340023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23319324 + ... + 23372075.

It is an arithmetic number, because the mean of its divisors is an integer number (55329309000).

Almost surely, 2^{1231532340024} is an apocalyptic number.

1231532340024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1231532340024 is an abundant number, since it is smaller than the sum of its proper divisors (2309543435976).

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

1231532340024 is a wasteful number, since it uses less digits than its factorization.

1231532340024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46691572 (or 46691568 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 1231532340024 its reverse (4200432351321), we get a palindrome (5431964691345).

The spelling of 1231532340024 in words is "one trillion, two hundred thirty-one billion, five hundred thirty-two million, three hundred forty thousand, twenty-four".