3121432406 has 32 divisors (see below), whose sum is σ = 4903130880. Its totient is φ = 1488852576.

The previous prime is 3121432399. The next prime is 3121432409. The reversal of 3121432406 is 6042341213.

3121432406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121432409) 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, 2282735 + ... + 2284101.

It is an arithmetic number, because the mean of its divisors is an integer number (153222840).

Almost surely, 2^3121432406 is an apocalyptic number.

3121432406 is a deficient number, since it is larger than the sum of its proper divisors (1781698474).

3121432406 is a wasteful number, since it uses less digits than its factorization.

3121432406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 3121432406 is about 55869.7807942720. The cubic root of 3121432406 is about 1461.4522994864.

Adding to 3121432406 its reverse (6042341213), we get a palindrome (9163773619).

The spelling of 3121432406 in words is "three billion, one hundred twenty-one million, four hundred thirty-two thousand, four hundred six".