31012132313243 has 2 divisors, whose sum is σ = 31012132313244. Its totient is φ = 31012132313242.

The previous prime is 31012132313177. The next prime is 31012132313269. The reversal of 31012132313243 is 34231323121013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31012132313243 - 2³⁶ = 30943412836507 is a prime.

It is a super-2 number, since 2×31012132313243² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31012132313843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506066156621 + 15506066156622.

It is an arithmetic number, because the mean of its divisors is an integer number (15506066156622).

Almost surely, 2^{31012132313243} is an apocalyptic number.

31012132313243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012132313243 is an equidigital number, since it uses as much as digits as its factorization.

31012132313243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 31012132313243 its reverse (34231323121013), we get a palindrome (65243455434256).

The spelling of 31012132313243 in words is "thirty-one trillion, twelve billion, one hundred thirty-two million, three hundred thirteen thousand, two hundred forty-three".