31213201039 has 2 divisors, whose sum is σ = 31213201040. Its totient is φ = 31213201038.

The previous prime is 31213201001. The next prime is 31213201057. The reversal of 31213201039 is 93010231213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31213201039 - 2¹³ = 31213192847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31213201139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606600519 + 15606600520.

It is an arithmetic number, because the mean of its divisors is an integer number (15606600520).

Almost surely, 2^31213201039 is an apocalyptic number.

31213201039 is a deficient number, since it is larger than the sum of its proper divisors (1).

31213201039 is an equidigital number, since it uses as much as digits as its factorization.

31213201039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 31213201039 in words is "thirty-one billion, two hundred thirteen million, two hundred one thousand, thirty-nine".