3121433401 has 2 divisors, whose sum is σ = 3121433402. Its totient is φ = 3121433400.

The previous prime is 3121433389. The next prime is 3121433417. The reversal of 3121433401 is 1043341213.

3121433401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2199703801 + 921729600 = 46901^2 + 30360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121433401 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121433101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560716700 + 1560716701.

It is an arithmetic number, because the mean of its divisors is an integer number (1560716701).

Almost surely, 2^3121433401 is an apocalyptic number.

It is an amenable number.

3121433401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121433401 is an equidigital number, since it uses as much as digits as its factorization.

3121433401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 3121433401 is about 55869.7896989062. The cubic root of 3121433401 is about 1461.4524547725.

Adding to 3121433401 its reverse (1043341213), we get a palindrome (4164774614).

The spelling of 3121433401 in words is "three billion, one hundred twenty-one million, four hundred thirty-three thousand, four hundred one".