31013432243 has 2 divisors, whose sum is σ = 31013432244. Its totient is φ = 31013432242.

The previous prime is 31013432237. The next prime is 31013432249. The reversal of 31013432243 is 34223431013.

It is a balanced prime because it is at equal distance from previous prime (31013432237) and next prime (31013432249).

It is a cyclic number.

It is not a de Polignac number, because 31013432243 - 2⁶ = 31013432179 is a prime.

It is a super-2 number, since 2×31013432243² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31013432249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506716121 + 15506716122.

It is an arithmetic number, because the mean of its divisors is an integer number (15506716122).

Almost surely, 2^31013432243 is an apocalyptic number.

31013432243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013432243 is an equidigital number, since it uses as much as digits as its factorization.

31013432243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31013432243 its reverse (34223431013), we get a palindrome (65236863256).

The spelling of 31013432243 in words is "thirty-one billion, thirteen million, four hundred thirty-two thousand, two hundred forty-three".