3205136401 has 4 divisors (see below), whose sum is σ = 3206140272. Its totient is φ = 3204132532.

The previous prime is 3205136399. The next prime is 3205136437. The reversal of 3205136401 is 1046315023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1046315023 = 13 ⋅80485771.

It is a cyclic number.

It is not a de Polignac number, because 3205136401 - 2¹ = 3205136399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3205136461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497131 + ... + 503536.

It is an arithmetic number, because the mean of its divisors is an integer number (801535068).

Almost surely, 2^3205136401 is an apocalyptic number.

It is an amenable number.

3205136401 is a deficient number, since it is larger than the sum of its proper divisors (1003871).

3205136401 is a wasteful number, since it uses less digits than its factorization.

3205136401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003870.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3205136401 is about 56613.9240911633. The cubic root of 3205136401 is about 1474.4006222760.

The spelling of 3205136401 in words is "three billion, two hundred five million, one hundred thirty-six thousand, four hundred one".