3213451345 has 48 divisors (see below), whose sum is σ = 4261118400. Its totient is φ = 2325024000.

The previous prime is 3213451331. The next prime is 3213451363. The reversal of 3213451345 is 5431543123.

It is not a de Polignac number, because 3213451345 - 2⁷ = 3213451217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12802470 + ... + 12802720.

It is an arithmetic number, because the mean of its divisors is an integer number (88773300).

Almost surely, 2^3213451345 is an apocalyptic number.

It is an amenable number.

3213451345 is a deficient number, since it is larger than the sum of its proper divisors (1047667055).

3213451345 is a wasteful number, since it uses less digits than its factorization.

3213451345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 517 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 3213451345 is about 56687.3120283543. The cubic root of 3213451345 is about 1475.6745121464.

Adding to 3213451345 its reverse (5431543123), we get a palindrome (8644994468).

The spelling of 3213451345 in words is "three billion, two hundred thirteen million, four hundred fifty-one thousand, three hundred forty-five".