31313242150501 has 2 divisors, whose sum is σ = 31313242150502. Its totient is φ = 31313242150500.

The previous prime is 31313242150499. The next prime is 31313242150543. The reversal of 31313242150501 is 10505124231313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24585988397476 + 6727253753025 = 4958426^2 + 2593695^2 .

It is a cyclic number.

It is not a de Polignac number, because 31313242150501 - 2¹ = 31313242150499 is a prime.

It is a super-2 number, since 2×31313242150501² (a number of 28 digits) contains 22 as substring.

Together with 31313242150499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31310242150501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656621075250 + 15656621075251.

It is an arithmetic number, because the mean of its divisors is an integer number (15656621075251).

Almost surely, 2^{31313242150501} is an apocalyptic number.

It is an amenable number.

31313242150501 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313242150501 is an equidigital number, since it uses as much as digits as its factorization.

31313242150501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 31313242150501 its reverse (10505124231313), we get a palindrome (41818366381814).

It can be divided in two parts, 3131324 and 2150501, that added together give a palindrome (5281825).

The spelling of 31313242150501 in words is "thirty-one trillion, three hundred thirteen billion, two hundred forty-two million, one hundred fifty thousand, five hundred one".