31438003013 has 2 divisors, whose sum is σ = 31438003014. Its totient is φ = 31438003012.

The previous prime is 31438002983. The next prime is 31438003033. The reversal of 31438003013 is 31030083413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30400712164 + 1037290849 = 174358^2 + 32207^2 .

It is a cyclic number.

It is not a de Polignac number, because 31438003013 - 2²² = 31433808709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31438003033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15719001506 + 15719001507.

It is an arithmetic number, because the mean of its divisors is an integer number (15719001507).

Almost surely, 2^31438003013 is an apocalyptic number.

It is an amenable number.

31438003013 is a deficient number, since it is larger than the sum of its proper divisors (1).

31438003013 is an equidigital number, since it uses as much as digits as its factorization.

31438003013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31438003013 its reverse (31030083413), we get a palindrome (62468086426).

The spelling of 31438003013 in words is "thirty-one billion, four hundred thirty-eight million, three thousand, thirteen".