3121041405 has 32 divisors (see below), whose sum is σ = 5158867968. Its totient is φ = 1609574400.

The previous prime is 3121041389. The next prime is 3121041431. The reversal of 3121041405 is 5041401213.

It is not a de Polignac number, because 3121041405 - 2⁴ = 3121041389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 926925 + ... + 930285.

It is an arithmetic number, because the mean of its divisors is an integer number (161214624).

Almost surely, 2^3121041405 is an apocalyptic number.

It is an amenable number.

3121041405 is a deficient number, since it is larger than the sum of its proper divisors (2037826563).

3121041405 is a wasteful number, since it uses less digits than its factorization.

3121041405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3121041405 is about 55866.2814674469. The cubic root of 3121041405 is about 1461.3912748138.

Adding to 3121041405 its reverse (5041401213), we get a palindrome (8162442618).

The spelling of 3121041405 in words is "three billion, one hundred twenty-one million, forty-one thousand, four hundred five".