3121240424 has 16 divisors (see below), whose sum is σ = 5853513600. Its totient is φ = 1560303472.

The previous prime is 3121240411. The next prime is 3121240469. The reversal of 3121240424 is 4240421213.

It is a self number, because there is not a number n which added to its sum of digits gives 3121240424.

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, 5279 + ... + 79185.

It is an arithmetic number, because the mean of its divisors is an integer number (365844600).

Almost surely, 2^3121240424 is an apocalyptic number.

It is an amenable number.

3121240424 is a deficient number, since it is larger than the sum of its proper divisors (2732273176).

3121240424 is a wasteful number, since it uses less digits than its factorization.

3121240424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79192 (or 79188 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 3121240424 is about 55868.0626476344. The cubic root of 3121240424 is about 1461.4223369296.

Adding to 3121240424 its reverse (4240421213), we get a palindrome (7361661637).

The spelling of 3121240424 in words is "three billion, one hundred twenty-one million, two hundred forty thousand, four hundred twenty-four".