3123221434240 has 64 divisors (see below), whose sum is σ = 7507702631520. Its totient is φ = 1242386380800.

The previous prime is 3123221434237. The next prime is 3123221434247. The reversal of 3123221434240 is 424341223213.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123221434247) 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, 13364916 + ... + 13596595.

Almost surely, 2^{3123221434240} is an apocalyptic number.

It is an amenable number.

3123221434240 is an abundant number, since it is smaller than the sum of its proper divisors (4384481197280).

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

3123221434240 is a wasteful number, since it uses less digits than its factorization.

3123221434240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26961711 (or 26961699 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 3123221434240 its reverse (424341223213), we get a palindrome (3547562657453).

The spelling of 3123221434240 in words is "three trillion, one hundred twenty-three billion, two hundred twenty-one million, four hundred thirty-four thousand, two hundred forty".