31140020363 has 2 divisors, whose sum is σ = 31140020364. Its totient is φ = 31140020362.

The previous prime is 31140020323. The next prime is 31140020437. The reversal of 31140020363 is 36302004113.

It is a weak prime.

It is an emirp because it is prime and its reverse (36302004113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31140020363 - 2⁶ = 31140020299 is a prime.

It is not a weakly prime, because it can be changed into another prime (31140020323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15570010181 + 15570010182.

It is an arithmetic number, because the mean of its divisors is an integer number (15570010182).

Almost surely, 2^31140020363 is an apocalyptic number.

31140020363 is a deficient number, since it is larger than the sum of its proper divisors (1).

31140020363 is an equidigital number, since it uses as much as digits as its factorization.

31140020363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31140020363 its reverse (36302004113), we get a palindrome (67442024476).

The spelling of 31140020363 in words is "thirty-one billion, one hundred forty million, twenty thousand, three hundred sixty-three".