3401203921 has 2 divisors, whose sum is σ = 3401203922. Its totient is φ = 3401203920.

The previous prime is 3401203919. The next prime is 3401203933. The reversal of 3401203921 is 1293021043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2804867521 + 596336400 = 52961^2 + 24420^2 .

It is an emirp because it is prime and its reverse (1293021043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3401203921 - 2¹ = 3401203919 is a prime.

It is a super-2 number, since 2×3401203921² = 23136376224451548482, which contains 22 as substring.

Together with 3401203919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3401203321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700601960 + 1700601961.

It is an arithmetic number, because the mean of its divisors is an integer number (1700601961).

Almost surely, 2^3401203921 is an apocalyptic number.

It is an amenable number.

3401203921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3401203921 is an equidigital number, since it uses as much as digits as its factorization.

3401203921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3401203921 is about 58319.8415721442. The cubic root of 3401203921 is about 1503.8720585450.

Adding to 3401203921 its reverse (1293021043), we get a palindrome (4694224964).

The spelling of 3401203921 in words is "three billion, four hundred one million, two hundred three thousand, nine hundred twenty-one".