31140799 has 2 divisors, whose sum is σ = 31140800. Its totient is φ = 31140798.

The previous prime is 31140797. The next prime is 31140841. The reversal of 31140799 is 99704113.

It is a weak prime.

It is an emirp because it is prime and its reverse (99704113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31140799 - 2¹ = 31140797 is a prime.

Together with 31140797, 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 (31140797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15570399 + 15570400.

It is an arithmetic number, because the mean of its divisors is an integer number (15570400).

Almost surely, 2^31140799 is an apocalyptic number.

31140799 is a deficient number, since it is larger than the sum of its proper divisors (1).

31140799 is an equidigital number, since it uses as much as digits as its factorization.

31140799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 31140799 is about 5580.3941617058. The cubic root of 31140799 is about 314.6129419125.

The spelling of 31140799 in words is "thirty-one million, one hundred forty thousand, seven hundred ninety-nine".