3213154920 has 32 divisors (see below), whose sum is σ = 9639465120. Its totient is φ = 856841280.

The previous prime is 3213154883. The next prime is 3213154951. The reversal of 3213154920 is 294513123.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13388026 + ... + 13388265.

It is an arithmetic number, because the mean of its divisors is an integer number (301233285).

Almost surely, 2^3213154920 is an apocalyptic number.

3213154920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3213154920 is an abundant number, since it is smaller than the sum of its proper divisors (6426310200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3213154920 is a wasteful number, since it uses less digits than its factorization.

3213154920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26776305 (or 26776301 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 3213154920 is about 56684.6974059137. The cubic root of 3213154920 is about 1475.6291361917.

The spelling of 3213154920 in words is "three billion, two hundred thirteen million, one hundred fifty-four thousand, nine hundred twenty".