3213324401557 has 2 divisors, whose sum is σ = 3213324401558. Its totient is φ = 3213324401556.

The previous prime is 3213324401519. The next prime is 3213324401579. The reversal of 3213324401557 is 7551044233123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2628957416836 + 584366984721 = 1621406^2 + 764439^2 .

It is an emirp because it is prime and its reverse (7551044233123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3213324401557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3213324401957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606662200778 + 1606662200779.

It is an arithmetic number, because the mean of its divisors is an integer number (1606662200779).

Almost surely, 2^{3213324401557} is an apocalyptic number.

It is an amenable number.

3213324401557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213324401557 is an equidigital number, since it uses as much as digits as its factorization.

3213324401557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 3213324401557 in words is "three trillion, two hundred thirteen billion, three hundred twenty-four million, four hundred one thousand, five hundred fifty-seven".