3213402140 has 24 divisors (see below), whose sum is σ = 7267233120. Its totient is φ = 1186486848.

The previous prime is 3213402047. The next prime is 3213402221. The reversal of 3213402140 is 412043123.

It is a super-4 number, since 4×3213402140⁴ (a number of 39 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6179360 + ... + 6179879.

It is an arithmetic number, because the mean of its divisors is an integer number (302801380).

Almost surely, 2^3213402140 is an apocalyptic number.

It is an amenable number.

3213402140 is an abundant number, since it is smaller than the sum of its proper divisors (4053830980).

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

3213402140 is a wasteful number, since it uses less digits than its factorization.

3213402140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12359261 (or 12359259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3213402140 is about 56686.8780230487. The cubic root of 3213402140 is about 1475.6669801684. Note that the first 3 decimals are identical.

Adding to 3213402140 its reverse (412043123), we get a palindrome (3625445263).

The spelling of 3213402140 in words is "three billion, two hundred thirteen million, four hundred two thousand, one hundred forty".