31542424213 has 2 divisors, whose sum is σ = 31542424214. Its totient is φ = 31542424212.

The previous prime is 31542424183. The next prime is 31542424231. The reversal of 31542424213 is 31242424513.

Together with next prime (31542424231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25669807524 + 5872616689 = 160218^2 + 76633^2 .

It is a cyclic number.

It is not a de Polignac number, because 31542424213 - 2⁹ = 31542423701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31542424253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15771212106 + 15771212107.

It is an arithmetic number, because the mean of its divisors is an integer number (15771212107).

Almost surely, 2^31542424213 is an apocalyptic number.

It is an amenable number.

31542424213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31542424213 is an equidigital number, since it uses as much as digits as its factorization.

31542424213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 31.

Adding to 31542424213 its reverse (31242424513), we get a palindrome (62784848726).

The spelling of 31542424213 in words is "thirty-one billion, five hundred forty-two million, four hundred twenty-four thousand, two hundred thirteen".