3213131407 has 2 divisors, whose sum is σ = 3213131408. Its totient is φ = 3213131406.

The previous prime is 3213131399. The next prime is 3213131423. The reversal of 3213131407 is 7041313123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3213131407 - 2³ = 3213131399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3213131437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606565703 + 1606565704.

It is an arithmetic number, because the mean of its divisors is an integer number (1606565704).

Almost surely, 2^3213131407 is an apocalyptic number.

3213131407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213131407 is an equidigital number, since it uses as much as digits as its factorization.

3213131407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 3213131407 is about 56684.4900038803. The cubic root of 3213131407 is about 1475.6255367644.

The spelling of 3213131407 in words is "three billion, two hundred thirteen million, one hundred thirty-one thousand, four hundred seven".