3213113421 has 16 divisors (see below), whose sum is σ = 4897944704. Its totient is φ = 1835400384.

The previous prime is 3213113413. The next prime is 3213113429. The reversal of 3213113421 is 1243113123.

3213113421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3213113413) and next prime (3213113429).

It is not a de Polignac number, because 3213113421 - 2³ = 3213113413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213113429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35031 + ... + 87483.

It is an arithmetic number, because the mean of its divisors is an integer number (306121544).

Almost surely, 2^3213113421 is an apocalyptic number.

It is an amenable number.

3213113421 is a deficient number, since it is larger than the sum of its proper divisors (1684831283).

3213113421 is a wasteful number, since it uses less digits than its factorization.

3213113421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55380.

The product of its digits is 432, while the sum is 21.

The square root of 3213113421 is about 56684.3313535584. The cubic root of 3213113421 is about 1475.6227834119.

Adding to 3213113421 its reverse (1243113123), we get a palindrome (4456226544).

The spelling of 3213113421 in words is "three billion, two hundred thirteen million, one hundred thirteen thousand, four hundred twenty-one".