31350379 has 2 divisors, whose sum is σ = 31350380. Its totient is φ = 31350378.

The previous prime is 31350373. The next prime is 31350391. The reversal of 31350379 is 97305313.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31350379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31350379.

It is not a weakly prime, because it can be changed into another prime (31350373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15675189 + 15675190.

It is an arithmetic number, because the mean of its divisors is an integer number (15675190).

Almost surely, 2^31350379 is an apocalyptic number.

31350379 is a deficient number, since it is larger than the sum of its proper divisors (1).

31350379 is an equidigital number, since it uses as much as digits as its factorization.

31350379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 31350379 is about 5599.1409162478. The cubic root of 31350379 is about 315.3171543244.

The spelling of 31350379 in words is "thirty-one million, three hundred fifty thousand, three hundred seventy-nine".