3123040400213 has 2 divisors, whose sum is σ = 3123040400214. Its totient is φ = 3123040400212.

The previous prime is 3123040400173. The next prime is 3123040400243. The reversal of 3123040400213 is 3120040403213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2959421768209 + 163618632004 = 1720297^2 + 404498^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123040400213 - 2¹⁰ = 3123040399189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123040400243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561520200106 + 1561520200107.

It is an arithmetic number, because the mean of its divisors is an integer number (1561520200107).

Almost surely, 2^{3123040400213} is an apocalyptic number.

It is an amenable number.

3123040400213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123040400213 is an equidigital number, since it uses as much as digits as its factorization.

3123040400213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 3123040400213 its reverse (3120040403213), we get a palindrome (6243080803426).

It can be divided in two parts, 3123040 and 400213, that added together give a palindrome (3523253).

The spelling of 3123040400213 in words is "three trillion, one hundred twenty-three billion, forty million, four hundred thousand, two hundred thirteen".