3213955257 has 4 divisors (see below), whose sum is σ = 4285273680. Its totient is φ = 2142636836.

The previous prime is 3213955243. The next prime is 3213955259. The reversal of 3213955257 is 7525593123.

3213955257 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 3213955257 - 2⁶ = 3213955193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3213955259) 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, 535659207 + ... + 535659212.

It is an arithmetic number, because the mean of its divisors is an integer number (1071318420).

Almost surely, 2^3213955257 is an apocalyptic number.

It is an amenable number.

3213955257 is a deficient number, since it is larger than the sum of its proper divisors (1071318423).

3213955257 is a wasteful number, since it uses less digits than its factorization.

3213955257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071318422.

The product of its digits is 283500, while the sum is 42.

The square root of 3213955257 is about 56691.7565171516. The cubic root of 3213955257 is about 1475.7516432586.

The spelling of 3213955257 in words is "three billion, two hundred thirteen million, nine hundred fifty-five thousand, two hundred fifty-seven".