3121433045240 has 16 divisors (see below), whose sum is σ = 7023224351880. Its totient is φ = 1248573218080.

The previous prime is 3121433045219. The next prime is 3121433045287. The reversal of 3121433045240 is 425403341213.

It is a junction number, because it is equal to n+sod(n) for n = 3121433045197 and 3121433045206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39017913026 + ... + 39017913105.

Almost surely, 2^{3121433045240} is an apocalyptic number.

It is an amenable number.

3121433045240 is an abundant number, since it is smaller than the sum of its proper divisors (3901791306640).

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

3121433045240 is a wasteful number, since it uses less digits than its factorization.

3121433045240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78035826142 (or 78035826138 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 3121433045240 its reverse (425403341213), we get a palindrome (3546836386453).

The spelling of 3121433045240 in words is "three trillion, one hundred twenty-one billion, four hundred thirty-three million, forty-five thousand, two hundred forty".